From fcea69d5136749827439fd6b2b45371034ca9599 Mon Sep 17 00:00:00 2001
From: Yann Bodson <yann.bodson@nokia.com>
Date: Thu, 11 Mar 2010 15:26:42 +1000
Subject: Move particles in their own plugin (Qt.labs.particles)
Task-number: QT-2846
---
.../minehunt/MinehuntCore/Explosion.qml | 1 +
.../samegame/SamegameCore/BoomBlock.qml | 1 +
demos/declarative/snake/content/Cookie.qml | 1 +
demos/declarative/snake/content/Link.qml | 1 +
.../declarative/animations/color-animation.qml | 1 +
examples/declarative/dynamic/dynamic.qml | 1 +
.../samegame/samegame4/content/BoomBlock.qml | 1 +
src/declarative/graphicsitems/graphicsitems.pri | 4 +-
.../graphicsitems/qdeclarativeitemsmodule.cpp | 6 -
.../graphicsitems/qdeclarativeparticles.cpp | 1317 --------------------
.../graphicsitems/qdeclarativeparticles_p.h | 258 ----
src/imports/imports.pro | 2 +-
src/imports/particles/particles.cpp | 69 +
src/imports/particles/particles.pro | 21 +
src/imports/particles/qdeclarativeparticles.cpp | 1316 +++++++++++++++++++
src/imports/particles/qdeclarativeparticles_p.h | 258 ++++
src/imports/particles/qmldir | 1 +
17 files changed, 1674 insertions(+), 1585 deletions(-)
delete mode 100644 src/declarative/graphicsitems/qdeclarativeparticles.cpp
delete mode 100644 src/declarative/graphicsitems/qdeclarativeparticles_p.h
create mode 100644 src/imports/particles/particles.cpp
create mode 100644 src/imports/particles/particles.pro
create mode 100644 src/imports/particles/qdeclarativeparticles.cpp
create mode 100644 src/imports/particles/qdeclarativeparticles_p.h
create mode 100644 src/imports/particles/qmldir
diff --git a/demos/declarative/minehunt/MinehuntCore/Explosion.qml b/demos/declarative/minehunt/MinehuntCore/Explosion.qml
index e337c46..172fcc0 100644
--- a/demos/declarative/minehunt/MinehuntCore/Explosion.qml
+++ b/demos/declarative/minehunt/MinehuntCore/Explosion.qml
@@ -1,4 +1,5 @@
import Qt 4.6
+import Qt.labs.particles 1.0
Item {
property bool explode : false
diff --git a/demos/declarative/samegame/SamegameCore/BoomBlock.qml b/demos/declarative/samegame/SamegameCore/BoomBlock.qml
index e48194a..b14531d 100644
--- a/demos/declarative/samegame/SamegameCore/BoomBlock.qml
+++ b/demos/declarative/samegame/SamegameCore/BoomBlock.qml
@@ -1,4 +1,5 @@
import Qt 4.6
+import Qt.labs.particles 1.0
Item { id:block
property bool dying: false
diff --git a/demos/declarative/snake/content/Cookie.qml b/demos/declarative/snake/content/Cookie.qml
index 0ea95cb..b64987e 100644
--- a/demos/declarative/snake/content/Cookie.qml
+++ b/demos/declarative/snake/content/Cookie.qml
@@ -1,4 +1,5 @@
import Qt 4.6
+import Qt.labs.particles 1.0
Item {
id: root
diff --git a/demos/declarative/snake/content/Link.qml b/demos/declarative/snake/content/Link.qml
index 31ac4b9..4171247 100644
--- a/demos/declarative/snake/content/Link.qml
+++ b/demos/declarative/snake/content/Link.qml
@@ -1,4 +1,5 @@
import Qt 4.6
+import Qt.labs.particles 1.0
Item { id:link
property bool dying: false
diff --git a/examples/declarative/animations/color-animation.qml b/examples/declarative/animations/color-animation.qml
index 6740522..025134b 100644
--- a/examples/declarative/animations/color-animation.qml
+++ b/examples/declarative/animations/color-animation.qml
@@ -1,4 +1,5 @@
import Qt 4.6
+import Qt.labs.particles 1.0
Item {
id: window
diff --git a/examples/declarative/dynamic/dynamic.qml b/examples/declarative/dynamic/dynamic.qml
index 6af3e81..7de4d38 100644
--- a/examples/declarative/dynamic/dynamic.qml
+++ b/examples/declarative/dynamic/dynamic.qml
@@ -1,4 +1,5 @@
import Qt 4.6
+import Qt.labs.particles 1.0
import "qml"
Item {
diff --git a/examples/declarative/tutorials/samegame/samegame4/content/BoomBlock.qml b/examples/declarative/tutorials/samegame/samegame4/content/BoomBlock.qml
index 9ef455a..a6ef62c 100644
--- a/examples/declarative/tutorials/samegame/samegame4/content/BoomBlock.qml
+++ b/examples/declarative/tutorials/samegame/samegame4/content/BoomBlock.qml
@@ -1,4 +1,5 @@
import Qt 4.6
+import Qt.labs.particles 1.0
Item { id:block
property int type: 0
diff --git a/src/declarative/graphicsitems/graphicsitems.pri b/src/declarative/graphicsitems/graphicsitems.pri
index 3ff92b1..d30651b 100644
--- a/src/declarative/graphicsitems/graphicsitems.pri
+++ b/src/declarative/graphicsitems/graphicsitems.pri
@@ -48,7 +48,6 @@ HEADERS += \
$$PWD/qdeclarativevisualitemmodel_p.h \
$$PWD/qdeclarativelistview_p.h \
$$PWD/qdeclarativegraphicsobjectcontainer_p.h \
- $$PWD/qdeclarativeparticles_p.h \
$$PWD/qdeclarativelayoutitem_p.h \
$$PWD/qdeclarativeitemchangelistener_p.h \
$$PWD/qdeclarativeeffects.cpp
@@ -82,5 +81,4 @@ SOURCES += \
$$PWD/qdeclarativevisualitemmodel.cpp \
$$PWD/qdeclarativelistview.cpp \
$$PWD/qdeclarativegraphicsobjectcontainer.cpp \
- $$PWD/qdeclarativeparticles.cpp \
- $$PWD/qdeclarativelayoutitem.cpp \
+ $$PWD/qdeclarativelayoutitem.cpp
diff --git a/src/declarative/graphicsitems/qdeclarativeitemsmodule.cpp b/src/declarative/graphicsitems/qdeclarativeitemsmodule.cpp
index 2d05c7c..2ac55a4 100644
--- a/src/declarative/graphicsitems/qdeclarativeitemsmodule.cpp
+++ b/src/declarative/graphicsitems/qdeclarativeitemsmodule.cpp
@@ -65,7 +65,6 @@
#include "qdeclarativelistview_p.h"
#include "qdeclarativeloader_p.h"
#include "qdeclarativemousearea_p.h"
-#include "qdeclarativeparticles_p.h"
#include "qdeclarativepath_p.h"
#include "qdeclarativepathview_p.h"
#include "qdeclarativerectangle_p.h"
@@ -108,11 +107,6 @@ void QDeclarativeItemModule::defineModule()
qmlRegisterType<QDeclarativeLoader>("Qt",4,6,"Loader");
qmlRegisterType<QDeclarativeMouseArea>("Qt",4,6,"MouseArea");
qmlRegisterType<QGraphicsOpacityEffect>("Qt",4,6,"Opacity");
- qmlRegisterType<QDeclarativeParticleMotion>("Qt",4,6,"ParticleMotion");
- qmlRegisterType<QDeclarativeParticleMotionGravity>("Qt",4,6,"ParticleMotionGravity");
- qmlRegisterType<QDeclarativeParticleMotionLinear>("Qt",4,6,"ParticleMotionLinear");
- qmlRegisterType<QDeclarativeParticleMotionWander>("Qt",4,6,"ParticleMotionWander");
- qmlRegisterType<QDeclarativeParticles>("Qt",4,6,"Particles");
qmlRegisterType<QDeclarativePath>("Qt",4,6,"Path");
qmlRegisterType<QDeclarativePathAttribute>("Qt",4,6,"PathAttribute");
qmlRegisterType<QDeclarativePathCubic>("Qt",4,6,"PathCubic");
diff --git a/src/declarative/graphicsitems/qdeclarativeparticles.cpp b/src/declarative/graphicsitems/qdeclarativeparticles.cpp
deleted file mode 100644
index 593c80a..0000000
--- a/src/declarative/graphicsitems/qdeclarativeparticles.cpp
+++ /dev/null
@@ -1,1317 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
-** All rights reserved.
-** Contact: Nokia Corporation (qt-info@nokia.com)
-**
-** This file is part of the QtDeclarative module of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** No Commercial Usage
-** This file contains pre-release code and may not be distributed.
-** You may use this file in accordance with the terms and conditions
-** contained in the Technology Preview License Agreement accompanying
-** this package.
-**
-** GNU Lesser General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU Lesser
-** General Public License version 2.1 as published by the Free Software
-** Foundation and appearing in the file LICENSE.LGPL included in the
-** packaging of this file. Please review the following information to
-** ensure the GNU Lesser General Public License version 2.1 requirements
-** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
-**
-** In addition, as a special exception, Nokia gives you certain additional
-** rights. These rights are described in the Nokia Qt LGPL Exception
-** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
-**
-** If you have questions regarding the use of this file, please contact
-** Nokia at qt-info@nokia.com.
-**
-**
-**
-**
-**
-**
-**
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "qdeclarativeparticles_p.h"
-
-#include "qdeclarativeitem_p.h"
-
-#include <qdeclarativepixmapcache_p.h>
-#include <qfxperf_p_p.h>
-#include <qdeclarativeanimation_p_p.h>
-
-#include <QNetworkReply>
-#include <QPainter>
-#include <QtGui/qdrawutil.h>
-#include <QVarLengthArray>
-
-#include <stdlib.h>
-#include <math.h>
-
-#ifndef M_PI
-#define M_PI 3.14159265358979323846
-#define M_PI_2 (M_PI / 2.)
-#endif
-#ifndef INT_MAX
-#define INT_MAX 2147483647
-#endif
-
-QT_BEGIN_NAMESPACE
-#define PI_SQR 9.8696044
-// parabolic approximation
-inline qreal fastSin(qreal theta)
-{
- const qreal b = 4 / M_PI;
- const qreal c = -4 / PI_SQR;
-
- qreal y = b * theta + c * theta * qAbs(theta);
- return y;
-}
-
-inline qreal fastCos(qreal theta)
-{
- theta += M_PI_2;
- if (theta > M_PI)
- theta -= 2 * M_PI;
-
- return fastSin(theta);
-}
-
-class QDeclarativeParticle
-{
-public:
- QDeclarativeParticle(int time) : lifeSpan(1000), fadeOutAge(800)
- , opacity(0), birthTime(time), x_velocity(0), y_velocity(0)
- , state(FadeIn), data(0)
- {
- }
-
- int lifeSpan;
- int fadeOutAge;
- qreal x;
- qreal y;
- qreal opacity;
- int birthTime;
- qreal x_velocity;
- qreal y_velocity;
- enum State { FadeIn, Solid, FadeOut };
- State state;
- void *data;
-};
-
-//---------------------------------------------------------------------------
-
-/*!
- \class QDeclarativeParticleMotion
- \ingroup group_effects
- \brief The QDeclarativeParticleMotion class is the base class for particle motion.
- \internal
-
- This class causes the particles to remain static.
-*/
-
-/*!
- Constructs a QDeclarativeParticleMotion with parent object \a parent.
-*/
-QDeclarativeParticleMotion::QDeclarativeParticleMotion(QObject *parent) :
- QObject(parent)
-{
-}
-
-/*!
- Move the \a particle to its new position. \a interval is the number of
- milliseconds elapsed since it was last moved.
-*/
-void QDeclarativeParticleMotion::advance(QDeclarativeParticle &particle, int interval)
-{
- Q_UNUSED(particle);
- Q_UNUSED(interval);
-}
-
-/*!
- The \a particle has just been created. Some motion strategies require
- additional state information. This can be allocated by this function.
-*/
-void QDeclarativeParticleMotion::created(QDeclarativeParticle &particle)
-{
- Q_UNUSED(particle);
-}
-
-/*!
- The \a particle is about to be destroyed. Any additional memory
- that has been allocated for the particle should be freed.
-*/
-void QDeclarativeParticleMotion::destroy(QDeclarativeParticle &particle)
-{
- Q_UNUSED(particle);
-}
-
-/*!
- \qmlclass ParticleMotionLinear
- \since 4.7
- \brief The ParticleMotionLinear object moves particles linearly.
-
- \sa Particles
-*/
-
-/*!
- \internal
- \class QDeclarativeParticleMotionLinear
- \ingroup group_effects
- \brief The QDeclarativeParticleMotionLinear class moves the particles linearly.
-*/
-
-void QDeclarativeParticleMotionLinear::advance(QDeclarativeParticle &p, int interval)
-{
- p.x += interval * p.x_velocity;
- p.y += interval * p.y_velocity;
-}
-
-/*!
- \qmlclass ParticleMotionGravity
- \since 4.7
- \brief The ParticleMotionGravity object moves particles towards a point.
-
- \sa Particles
-*/
-
-/*!
- \internal
- \class QDeclarativeParticleMotionGravity
- \ingroup group_effects
- \brief The QDeclarativeParticleMotionGravity class moves the particles towards a point.
-*/
-
-/*!
- \qmlproperty qreal ParticleMotionGravity::xattractor
- \qmlproperty qreal ParticleMotionGravity::yattractor
- These properties hold the x and y coordinates of the point attracting the particles.
-*/
-
-/*!
- \qmlproperty qreal ParticleMotionGravity::acceleration
- This property holds the acceleration to apply to the particles.
-*/
-
-/*!
- \property QDeclarativeParticleMotionGravity::xattractor
- \brief the x coordinate of the point attracting the particles.
-*/
-
-/*!
- \property QDeclarativeParticleMotionGravity::yattractor
- \brief the y coordinate of the point attracting the particles.
-*/
-
-/*!
- \property QDeclarativeParticleMotionGravity::acceleration
- \brief the acceleration to apply to the particles.
-*/
-
-void QDeclarativeParticleMotionGravity::setXAttractor(qreal x)
-{
- if (qFuzzyCompare(x, _xAttr))
- return;
- _xAttr = x;
- emit xattractorChanged();
-}
-
-void QDeclarativeParticleMotionGravity::setYAttractor(qreal y)
-{
- if (qFuzzyCompare(y, _yAttr))
- return;
- _yAttr = y;
- emit yattractorChanged();
-}
-
-void QDeclarativeParticleMotionGravity::setAcceleration(qreal accel)
-{
- qreal scaledAccel = accel/1000000.0;
- if (qFuzzyCompare(scaledAccel, _accel))
- return;
- _accel = scaledAccel;
- emit accelerationChanged();
-}
-
-void QDeclarativeParticleMotionGravity::advance(QDeclarativeParticle &p, int interval)
-{
- qreal xdiff = p.x - _xAttr;
- qreal ydiff = p.y - _yAttr;
-
- qreal xcomp = xdiff / (xdiff + ydiff);
- qreal ycomp = ydiff / (xdiff + ydiff);
-
- p.x_velocity += xcomp * _accel * interval;
- p.y_velocity += ycomp * _accel * interval;
-
- p.x += interval * p.x_velocity;
- p.y += interval * p.y_velocity;
-}
-
-/*!
- \qmlclass ParticleMotionWander
- \since 4.7
- \brief The ParticleMotionWander object moves particles in a somewhat random fashion.
-
- The particles will continue roughly in the original direction, however will randomly
- drift to each side.
-
- The code below produces an effect similar to falling snow.
-
- \qml
-Rectangle {
- width: 240
- height: 320
- color: "black"
-
- Particles {
- y: 0
- width: parent.width
- height: 30
- source: "star.png"
- lifeSpan: 5000
- count: 50
- angle: 70
- angleDeviation: 36
- velocity: 30
- velocityDeviation: 10
- ParticleMotionWander {
- xvariance: 30
- pace: 100
- }
- }
-}
- \endqml
-
- \sa Particles
-*/
-
-/*!
- \internal
- \class QDeclarativeParticleMotionWander
- \ingroup group_effects
- \brief The QDeclarativeParticleMotionWander class moves particles in a somewhat random fashion.
-
- The particles will continue roughly in the original direction, however will randomly
- drift to each side.
-*/
-
-/*!
- \qmlproperty qreal QDeclarativeParticleMotionWander::xvariance
- \qmlproperty qreal QDeclarativeParticleMotionWander::yvariance
-
- These properties set the amount to wander in the x and y directions.
-*/
-
-/*!
- \qmlproperty qreal QDeclarativeParticleMotionWander::pace
- This property holds how quickly the paricles will move from side to side.
-*/
-
-void QDeclarativeParticleMotionWander::advance(QDeclarativeParticle &p, int interval)
-{
- if (!particles)
- particles = qobject_cast<QDeclarativeParticles*>(parent());
- if (particles) {
- Data *d = (Data*)p.data;
- if (_xvariance != 0.) {
- qreal xdiff = p.x_velocity - d->x_targetV;
- if ((xdiff > d->x_peak && d->x_var > 0.0) || (xdiff < -d->x_peak && d->x_var < 0.0)) {
- d->x_var = -d->x_var;
- d->x_peak = _xvariance + _xvariance * qreal(qrand()) / RAND_MAX;
- }
- p.x_velocity += d->x_var * interval;
- }
- p.x += interval * p.x_velocity;
-
- if (_yvariance != 0.) {
- qreal ydiff = p.y_velocity - d->y_targetV;
- if ((ydiff > d->y_peak && d->y_var > 0.0) || (ydiff < -d->y_peak && d->y_var < 0.0)) {
- d->y_var = -d->y_var;
- d->y_peak = _yvariance + _yvariance * qreal(qrand()) / RAND_MAX;
- }
- p.y_velocity += d->y_var * interval;
- }
- p.y += interval * p.y_velocity;
- }
-}
-
-void QDeclarativeParticleMotionWander::created(QDeclarativeParticle &p)
-{
- if (!p.data) {
- Data *d = new Data;
- p.data = (void*)d;
- d->x_targetV = p.x_velocity;
- d->y_targetV = p.y_velocity;
- d->x_peak = _xvariance;
- d->y_peak = _yvariance;
- d->x_var = _pace * qreal(qrand()) / RAND_MAX / 1000.0;
- d->y_var = _pace * qreal(qrand()) / RAND_MAX / 1000.0;
- }
-}
-
-void QDeclarativeParticleMotionWander::destroy(QDeclarativeParticle &p)
-{
- if (p.data)
- delete (Data*)p.data;
-}
-
-void QDeclarativeParticleMotionWander::setXVariance(qreal var)
-{
- qreal scaledVar = var / 1000.0;
- if (qFuzzyCompare(scaledVar, _xvariance))
- return;
- _xvariance = scaledVar;
- emit xvarianceChanged();
-}
-
-void QDeclarativeParticleMotionWander::setYVariance(qreal var)
-{
- qreal scaledVar = var / 1000.0;
- if (qFuzzyCompare(scaledVar, _yvariance))
- return;
- _yvariance = scaledVar;
- emit yvarianceChanged();
-}
-
-void QDeclarativeParticleMotionWander::setPace(qreal pace)
-{
- qreal scaledPace = pace / 1000.0;
- if (qFuzzyCompare(scaledPace, _pace))
- return;
- _pace = scaledPace;
- emit paceChanged();
-}
-
-//---------------------------------------------------------------------------
-class QDeclarativeParticlesPainter : public QDeclarativeItem
-{
-public:
- QDeclarativeParticlesPainter(QDeclarativeParticlesPrivate *p, QDeclarativeItem* parent)
- : QDeclarativeItem(parent), d(p)
- {
- setFlag(QGraphicsItem::ItemHasNoContents, false);
- maxX = minX = maxY = minY = 0;
- }
-
- void paint(QPainter *, const QStyleOptionGraphicsItem *, QWidget *);
-
- void updateSize();
-
- qreal maxX;
- qreal minX;
- qreal maxY;
- qreal minY;
- QDeclarativeParticlesPrivate* d;
-};
-
-//---------------------------------------------------------------------------
-class QDeclarativeParticlesPrivate : public QDeclarativeItemPrivate
-{
- Q_DECLARE_PUBLIC(QDeclarativeParticles)
-public:
- QDeclarativeParticlesPrivate()
- : count(1), emissionRate(-1), emissionVariance(0.5), lifeSpan(1000)
- , lifeSpanDev(1000), fadeInDur(200), fadeOutDur(300)
- , angle(0), angleDev(0), velocity(0), velocityDev(0), emissionCarry(0.)
- , addParticleTime(0), addParticleCount(0), lastAdvTime(0)
- , motion(0), pendingPixmapCache(false), clock(this)
- {
- }
-
- ~QDeclarativeParticlesPrivate()
- {
- }
-
- void init()
- {
- Q_Q(QDeclarativeParticles);
- paintItem = new QDeclarativeParticlesPainter(this, q);
- }
-
- void tick(int time);
- void createParticle(int time);
- void updateOpacity(QDeclarativeParticle &p, int age);
-
- QUrl url;
- QPixmap image;
- int count;
- int emissionRate;
- qreal emissionVariance;
- int lifeSpan;
- int lifeSpanDev;
- int fadeInDur;
- int fadeOutDur;
- qreal angle;
- qreal angleDev;
- qreal velocity;
- qreal velocityDev;
- qreal emissionCarry;
- int addParticleTime;
- int addParticleCount;
- int lastAdvTime;
- QDeclarativeParticleMotion *motion;
- QDeclarativeParticlesPainter *paintItem;
-
- bool pendingPixmapCache;
-
- QList<QPair<int, int> > bursts;//countLeft, emissionRate pairs
- QList<QDeclarativeParticle> particles;
- QTickAnimationProxy<QDeclarativeParticlesPrivate, &QDeclarativeParticlesPrivate::tick> clock;
-
-};
-
-void QDeclarativeParticlesPrivate::tick(int time)
-{
- Q_Q(QDeclarativeParticles);
- if (!motion)
- motion = new QDeclarativeParticleMotionLinear(q);
-
- int oldCount = particles.count();
- int removed = 0;
- int interval = time - lastAdvTime;
- for (int i = 0; i < particles.count(); ) {
- QDeclarativeParticle &particle = particles[i];
- int age = time - particle.birthTime;
- if (age >= particle.lifeSpan) {
- QDeclarativeParticle part = particles.takeAt(i);
- motion->destroy(part);
- ++removed;
- } else {
- updateOpacity(particle, age);
- motion->advance(particle, interval);
- ++i;
- }
- }
-
- if(emissionRate == -1)//Otherwise leave emission to the emission rate
- while(removed-- && ((count == -1) || particles.count() < count))
- createParticle(time);
-
- if (!addParticleTime)
- addParticleTime = time;
-
- //Possibly emit new particles
- if (((count == -1) || particles.count() < count) && emissionRate
- && !(count==-1 && emissionRate==-1)) {
- int emissionCount = -1;
- if (emissionRate != -1){
- qreal variance = 1.;
- if (emissionVariance > 0.){
- variance += (qreal(qrand())/RAND_MAX) * emissionVariance * (qrand()%2?-1.:1.);
- }
- qreal emission = emissionRate * (qreal(interval)/1000.);
- emission = emission * variance + emissionCarry;
- double tmpDbl;
- emissionCarry = modf(emission, &tmpDbl);
- emissionCount = (int)tmpDbl;
- emissionCount = qMax(0,emissionCount);
- }
- while(((count == -1) || particles.count() < count) &&
- (emissionRate==-1 || emissionCount--))
- createParticle(time);
- }
-
- //Deal with emissions from requested bursts
- for(int i=0; i<bursts.size(); i++){
- int emission = 0;
- if(bursts[i].second == -1){
- emission = bursts[i].first;
- }else{
- qreal variance = 1.;
- if (emissionVariance > 0.){
- variance += (qreal(qrand())/RAND_MAX) * emissionVariance * (qrand()%2?-1.:1.);
- }
- qreal workingEmission = bursts[i].second * (qreal(interval)/1000.);
- workingEmission *= variance;
- emission = (int)workingEmission;
- emission = qMax(emission, 0);
- }
- emission = qMin(emission, bursts[i].first);
- bursts[i].first -= emission;
- while(emission--)
- createParticle(time);
- }
- for(int i=bursts.size()-1; i>=0; i--)
- if(bursts[i].first <= 0)
- bursts.removeAt(i);
-
- lastAdvTime = time;
- paintItem->updateSize();
- paintItem->update();
- if (!(oldCount || particles.count()) && (!count || !emissionRate) && bursts.isEmpty()) {
- lastAdvTime = 0;
- clock.stop();
- }
-}
-
-void QDeclarativeParticlesPrivate::createParticle(int time)
-{
-#ifdef Q_ENABLE_PERFORMANCE_LOG
- QDeclarativePerfTimer<QDeclarativePerf::CreateParticle> x;
-#endif
- Q_Q(QDeclarativeParticles);
- QDeclarativeParticle p(time);
- p.x = q->x() + q->width() * qreal(qrand()) / RAND_MAX - image.width()/2.0;
- p.y = q->y() + q->height() * qreal(qrand()) / RAND_MAX - image.height()/2.0;
- p.lifeSpan = lifeSpan;
- if (lifeSpanDev)
- p.lifeSpan += int(lifeSpanDev/2 - lifeSpanDev * qreal(qrand()) / RAND_MAX);
- p.fadeOutAge = p.lifeSpan - fadeOutDur;
- if (fadeInDur == 0.) {
- p.state= QDeclarativeParticle::Solid;
- p.opacity = 1.0;
- }
- qreal a = angle;
- if (angleDev)
- a += angleDev/2 - angleDev * qreal(qrand()) / RAND_MAX;
- if (a > M_PI)
- a = a - 2 * M_PI;
- qreal v = velocity;
- if (velocityDev)
- v += velocityDev/2 - velocityDev * qreal(qrand()) / RAND_MAX;
- p.x_velocity = v * fastCos(a);
- p.y_velocity = v * fastSin(a);
- particles.append(p);
- motion->created(particles.last());
-}
-
-void QDeclarativeParticlesPrivate::updateOpacity(QDeclarativeParticle &p, int age)
-{
- switch (p.state) {
- case QDeclarativeParticle::FadeIn:
- if (age <= fadeInDur) {
- p.opacity = qreal(age) / fadeInDur;
- break;
- } else {
- p.opacity = 1.0;
- p.state = QDeclarativeParticle::Solid;
- // Fall through
- }
- case QDeclarativeParticle::Solid:
- if (age <= p.fadeOutAge) {
- break;
- } else {
- p.state = QDeclarativeParticle::FadeOut;
- // Fall through
- }
- case QDeclarativeParticle::FadeOut:
- p.opacity = qreal(p.lifeSpan - age) / fadeOutDur;
- break;
- }
-}
-
-/*!
- \qmlclass Particles
- \since 4.7
- \brief The Particles object generates and moves particles.
- \inherits Item
-
- This element provides preliminary support for particles in QML,
- and may be heavily changed or removed in later versions.
-
- The particles created by this object cannot be dealt with
- directly, they can only be controlled through the parameters of
- the Particles object. The particles are all the same pixmap,
- specified by the user.
-
- The particles are painted relative to the parent of the Particles
- object. Moving the Particles object will not move the particles
- already emitted.
-
- The below example creates two differently behaving particle
- sources. The top one has particles falling from the top like
- snow, the lower one has particles expelled up like a fountain.
-
- \qml
-Rectangle {
- width: 240
- height: 320
- color: "black"
- Particles {
- y: 0
- width: parent.width
- height: 30
- source: "star.png"
- lifeSpan: 5000
- count: 50
- angle: 70
- angleDeviation: 36
- velocity: 30
- velocityDeviation: 10
- ParticleMotionWander {
- xvariance: 30
- pace: 100
- }
- }
- Particles {
- y: 300
- x: 120
- width: 1
- height: 1
- source: "star.png"
- lifeSpan: 5000
- count: 200
- angle: 270
- angleDeviation: 45
- velocity: 50
- velocityDeviation: 30
- ParticleMotionGravity {
- yattractor: 1000
- xattractor: 0
- acceleration: 25
- }
- }
-}
- \endqml
- \image particles.gif
-*/
-
-/*!
- \internal
- \class QDeclarativeParticles
- \ingroup group_effects
- \brief The QDeclarativeParticles class generates and moves particles.
-*/
-
-QDeclarativeParticles::QDeclarativeParticles(QDeclarativeItem *parent)
- : QDeclarativeItem(*(new QDeclarativeParticlesPrivate), parent)
-{
- Q_D(QDeclarativeParticles);
- d->init();
-}
-
-QDeclarativeParticles::~QDeclarativeParticles()
-{
- Q_D(QDeclarativeParticles);
- if (d->pendingPixmapCache)
- QDeclarativePixmapCache::cancel(d->url, this);
-}
-
-/*!
- \qmlproperty string Particles::source
- This property holds the URL of the particle image.
-*/
-
-/*!
- \property QDeclarativeParticles::source
- \brief the URL of the particle image.
-*/
-QUrl QDeclarativeParticles::source() const
-{
- Q_D(const QDeclarativeParticles);
- return d->url;
-}
-
-void QDeclarativeParticles::imageLoaded()
-{
- Q_D(QDeclarativeParticles);
- d->pendingPixmapCache = false;
- QDeclarativePixmapCache::get(d->url, &d->image);
- d->paintItem->updateSize();
- d->paintItem->update();
-}
-
-void QDeclarativeParticles::setSource(const QUrl &name)
-{
- Q_D(QDeclarativeParticles);
-
- if ((d->url.isEmpty() == name.isEmpty()) && name == d->url)
- return;
-
- if (d->pendingPixmapCache) {
- QDeclarativePixmapCache::cancel(d->url, this);
- d->pendingPixmapCache = false;
- }
- if (name.isEmpty()) {
- d->url = name;
- d->image = QPixmap();
- d->paintItem->updateSize();
- d->paintItem->update();
- } else {
- d->url = name;
- Q_ASSERT(!name.isRelative());
- QDeclarativePixmapReply::Status status = QDeclarativePixmapCache::get(d->url, &d->image);
- if (status != QDeclarativePixmapReply::Ready && status != QDeclarativePixmapReply::Error) {
- QDeclarativePixmapReply *reply = QDeclarativePixmapCache::request(qmlEngine(this), d->url);
- connect(reply, SIGNAL(finished()), this, SLOT(imageLoaded()));
- d->pendingPixmapCache = true;
- } else {
- //### unify with imageLoaded
- d->paintItem->updateSize();
- d->paintItem->update();
- }
- }
- emit sourceChanged();
-}
-
-/*!
- \qmlproperty int Particles::count
- This property holds the maximum number of particles
-
- The particles element emits particles until it has count active
- particles. When this number is reached, new particles are not emitted until
- some of the current particles reach the end of their lifespan.
-
- If count is -1 then there is no maximum number of active particles, and
- particles will be constantly emitted at the rate specified by emissionRate.
-
- The default value for count is 1.
-
- If both count and emissionRate are set to -1, nothing will be emitted.
-
-*/
-
-/*!
- \property QDeclarativeParticles::count
- \brief the maximum number of particles
-*/
-int QDeclarativeParticles::count() const
-{
- Q_D(const QDeclarativeParticles);
- return d->count;
-}
-
-void QDeclarativeParticles::setCount(int cnt)
-{
- Q_D(QDeclarativeParticles);
- if (cnt == d->count)
- return;
-
- int oldCount = d->count;
- d->count = cnt;
- d->addParticleTime = 0;
- d->addParticleCount = d->particles.count();
- if (!oldCount && d->clock.state() != QAbstractAnimation::Running && d->count && d->emissionRate) {
- d->clock.start();
- }
- d->paintItem->updateSize();
- d->paintItem->update();
- emit countChanged();
-}
-
-
-/*!
- \qmlproperty int Particles::emissionRate
- This property holds the target number of particles to emit every second.
-
- The particles element will emit up to emissionRate particles every
- second. Fewer particles may be emitted per second if the maximum number of
- particles has been reached.
-
- If emissionRate is set to -1 there is no limit to the number of
- particles emitted per second, and particles will be instantly emitted to
- reach the maximum number of particles specified by count.
-
- The default value for emissionRate is -1.
-
- If both count and emissionRate are set to -1, nothing will be emitted.
-*/
-
-/*!
- \property QDeclarativeParticles::emissionRate
- \brief the emission rate of particles
-*/
-int QDeclarativeParticles::emissionRate() const
-{
- Q_D(const QDeclarativeParticles);
- return d->emissionRate;
-}
-void QDeclarativeParticles::setEmissionRate(int er)
-{
- Q_D(QDeclarativeParticles);
- if(er == d->emissionRate)
- return;
- d->emissionRate = er;
- if (d->clock.state() != QAbstractAnimation::Running && d->count && d->emissionRate) {
- d->clock.start();
- }
- emit emissionRateChanged();
-}
-
-/*!
- \qmlproperty qreal Particles::emissionVariance
- This property holds how inconsistent the rate of particle emissions are.
- It is a number between 0 (no variance) and 1 (some variance).
-
- The expected number of particles emitted per second is emissionRate. If
- emissionVariance is 0 then particles will be emitted consistently throughout
- each second to reach that number. If emissionVariance is greater than 0 the
- rate of particle emission will vary randomly throughout the second, with the
- consequence that the actual number of particles emitted in one second will
- vary randomly as well.
-
- emissionVariance is the maximum deviation from emitting
- emissionRate particles per second. An emissionVariance of 0 means you should
- get exactly emissionRate particles emitted per second,
- and an emissionVariance of 1 means you will get between zero and two times
- emissionRate particles per second, but you should get emissionRate particles
- per second on average.
-
- Note that even with an emissionVariance of 0 there may be some variance due
- to performance and hardware constraints.
-
- The default value of emissionVariance is 0.5
-*/
-
-/*!
- \property QDeclarativeParticles::emissionVariance
- \brief how much the particle emission amounts vary per tick
-*/
-
-qreal QDeclarativeParticles::emissionVariance() const
-{
- Q_D(const QDeclarativeParticles);
- return d->emissionVariance;
-}
-
-void QDeclarativeParticles::setEmissionVariance(qreal ev)
-{
- Q_D(QDeclarativeParticles);
- if(d->emissionVariance == ev)
- return;
- d->emissionVariance = ev;
- emit emissionVarianceChanged();
-}
-
-/*!
- \qmlproperty int Particles::lifeSpan
- \qmlproperty int Particles::lifeSpanDeviation
-
- These properties describe the life span of each particle.
-
- The default lifespan for a particle is 1000ms.
-
- lifeSpanDeviation randomly varies the lifeSpan up to the specified variation. For
- example, the following creates particles whose lifeSpan will vary
- from 150ms to 250ms:
-
- \qml
-Particles {
- source: "star.png"
- lifeSpan: 200
- lifeSpanDeviation: 100
-}
- \endqml
-*/
-
-/*!
- \property QDeclarativeParticles::lifeSpan
- \brief the life span of each particle.
-
- Default value is 1000ms.
-
- \sa QDeclarativeParticles::lifeSpanDeviation
-*/
-int QDeclarativeParticles::lifeSpan() const
-{
- Q_D(const QDeclarativeParticles);
- return d->lifeSpan;
-}
-
-void QDeclarativeParticles::setLifeSpan(int ls)
-{
- Q_D(QDeclarativeParticles);
- if(d->lifeSpan == ls)
- return;
- d->lifeSpan = ls;
- emit lifeSpanChanged();
-}
-
-/*!
- \property QDeclarativeParticles::lifeSpanDeviation
- \brief the maximum possible deviation from the set lifeSpan.
-
- Randomly varies the lifeSpan up to the specified variation. For
- example, the following creates particles whose lifeSpan will vary
- from 150ms to 250ms:
-
-\qml
-Particles {
- source: "star.png"
- lifeSpan: 200
- lifeSpanDeviation: 100
-}
-\endqml
-
- \sa QDeclarativeParticles::lifeSpan
-*/
-int QDeclarativeParticles::lifeSpanDeviation() const
-{
- Q_D(const QDeclarativeParticles);
- return d->lifeSpanDev;
-}
-
-void QDeclarativeParticles::setLifeSpanDeviation(int dev)
-{
- Q_D(QDeclarativeParticles);
- if(d->lifeSpanDev == dev)
- return;
- d->lifeSpanDev = dev;
- emit lifeSpanDeviationChanged();
-}
-
-/*!
- \qmlproperty int Particles::fadeInDuration
- \qmlproperty int Particles::fadeOutDuration
- These properties hold the time taken to fade the particles in and out.
-
- By default fade in is 200ms and fade out is 300ms.
-*/
-
-/*!
- \property QDeclarativeParticles::fadeInDuration
- \brief the time taken to fade in the particles.
-
- Default value is 200ms.
-*/
-int QDeclarativeParticles::fadeInDuration() const
-{
- Q_D(const QDeclarativeParticles);
- return d->fadeInDur;
-}
-
-void QDeclarativeParticles::setFadeInDuration(int dur)
-{
- Q_D(QDeclarativeParticles);
- if (dur < 0.0 || dur == d->fadeInDur)
- return;
- d->fadeInDur = dur;
- emit fadeInDurationChanged();
-}
-
-/*!
- \property QDeclarativeParticles::fadeOutDuration
- \brief the time taken to fade out the particles.
-
- Default value is 300ms.
-*/
-int QDeclarativeParticles::fadeOutDuration() const
-{
- Q_D(const QDeclarativeParticles);
- return d->fadeOutDur;
-}
-
-void QDeclarativeParticles::setFadeOutDuration(int dur)
-{
- Q_D(QDeclarativeParticles);
- if (dur < 0.0 || d->fadeOutDur == dur)
- return;
- d->fadeOutDur = dur;
- emit fadeOutDurationChanged();
-}
-
-/*!
- \qmlproperty real Particles::angle
- \qmlproperty real Particles::angleDeviation
-
- These properties control particle direction.
-
- angleDeviation randomly varies the direction up to the specified variation. For
- example, the following creates particles whose initial direction will
- vary from 15 degrees to 105 degrees:
-
- \qml
-Particles {
- source: "star.png"
- angle: 60
- angleDeviation: 90
-}
- \endqml
-*/
-
-/*!
- \property QDeclarativeParticles::angle
- \brief the initial angle of direction.
-
- \sa QDeclarativeParticles::angleDeviation
-*/
-qreal QDeclarativeParticles::angle() const
-{
- Q_D(const QDeclarativeParticles);
- return d->angle * 180.0 / M_PI;
-}
-
-void QDeclarativeParticles::setAngle(qreal angle)
-{
- Q_D(QDeclarativeParticles);
- qreal radAngle = angle * M_PI / 180.0;
- if(radAngle == d->angle)
- return;
- d->angle = radAngle;
- emit angleChanged();
-}
-
-/*!
- \property QDeclarativeParticles::angleDeviation
- \brief the maximum possible deviation from the set angle.
-
- Randomly varies the direction up to the specified variation. For
- example, the following creates particles whose initial direction will
- vary from 15 degrees to 105 degrees:
-
-\qml
-Particles {
- source: "star.png"
- angle: 60
- angleDeviation: 90
-}
-\endqml
-
- \sa QDeclarativeParticles::angle
-*/
-qreal QDeclarativeParticles::angleDeviation() const
-{
- Q_D(const QDeclarativeParticles);
- return d->angleDev * 180.0 / M_PI;
-}
-
-void QDeclarativeParticles::setAngleDeviation(qreal dev)
-{
- Q_D(QDeclarativeParticles);
- qreal radDev = dev * M_PI / 180.0;
- if(radDev == d->angleDev)
- return;
- d->angleDev = radDev;
- emit angleDeviationChanged();
-}
-
-/*!
- \qmlproperty real Particles::velocity
- \qmlproperty real Particles::velocityDeviation
-
- These properties control the velocity of the particles.
-
- velocityDeviation randomly varies the velocity up to the specified variation. For
- example, the following creates particles whose initial velocity will
- vary from 40 to 60.
-
- \qml
-Particles {
- source: "star.png"
- velocity: 50
- velocityDeviation: 20
-}
- \endqml
-*/
-
-/*!
- \property QDeclarativeParticles::velocity
- \brief the initial velocity of the particles.
-
- \sa QDeclarativeParticles::velocityDeviation
-*/
-qreal QDeclarativeParticles::velocity() const
-{
- Q_D(const QDeclarativeParticles);
- return d->velocity * 1000.0;
-}
-
-void QDeclarativeParticles::setVelocity(qreal velocity)
-{
- Q_D(QDeclarativeParticles);
- qreal realVel = velocity / 1000.0;
- if(realVel == d->velocity)
- return;
- d->velocity = realVel;
- emit velocityChanged();
-}
-
-/*!
- \property QDeclarativeParticles::velocityDeviation
- \brief the maximum possible deviation from the set velocity.
-
- Randomly varies the velocity up to the specified variation. For
- example, the following creates particles whose initial velocity will
- vary from 40 to 60.
-
-\qml
-Particles {
- source: "star.png"
- velocity: 50
- velocityDeviation: 20
-}
-\endqml
-
- \sa QDeclarativeParticles::velocity
-*/
-qreal QDeclarativeParticles::velocityDeviation() const
-{
- Q_D(const QDeclarativeParticles);
- return d->velocityDev * 1000.0;
-}
-
-void QDeclarativeParticles::setVelocityDeviation(qreal velocity)
-{
- Q_D(QDeclarativeParticles);
- qreal realDev = velocity / 1000.0;
- if(realDev == d->velocityDev)
- return;
- d->velocityDev = realDev;
- emit velocityDeviationChanged();
-}
-
-/*!
- \qmlproperty ParticleMotion Particles::motion
- This property sets the type of motion to apply to the particles.
-
- When a particle is created it will have an initial direction and velocity.
- The motion of the particle during its lifeSpan is then influenced by the
- motion property.
-
- Default motion is ParticleMotionLinear.
-*/
-
-/*!
- \property QDeclarativeParticles::motion
- \brief sets the type of motion to apply to the particles.
-
- When a particle is created it will have an initial direction and velocity.
- The motion of the particle during its lifeSpan is then influenced by the
- motion property.
-
- Default motion is QDeclarativeParticleMotionLinear.
-*/
-QDeclarativeParticleMotion *QDeclarativeParticles::motion() const
-{
- Q_D(const QDeclarativeParticles);
- return d->motion;
-}
-
-void QDeclarativeParticles::setMotion(QDeclarativeParticleMotion *motion)
-{
- Q_D(QDeclarativeParticles);
- if (motion == d->motion)
- return;
- d->motion = motion;
- emit motionChanged();
-}
-
-/*!
- \qmlmethod Particles::burst(int count, int emissionRate)
-
- Initiates a burst of particles.
-
- This method takes two arguments. The first argument is the number
- of particles to emit and the second argument is the emissionRate for the
- burst. If the second argument is omitted, it is treated as -1. The burst
- of particles has a separate emissionRate and count to the normal emission of
- particles. The burst uses the same values as normal emission for all other
- properties, including emissionVariance.
-
- The normal emission of particles will continue during the burst, however
- the particles created by the burst count towards the maximum number used by
- normal emission. To avoid this behavior, use two Particles elements.
-
-*/
-void QDeclarativeParticles::burst(int count, int emissionRate)
-{
- Q_D(QDeclarativeParticles);
- d->bursts << qMakePair(count, emissionRate);
- if (d->clock.state() != QAbstractAnimation::Running)
- d->clock.start();
-}
-
-void QDeclarativeParticlesPainter::updateSize()
-{
- if (!d->_componentComplete)
- return;
-
- const int parentX = parentItem()->x();
- const int parentY = parentItem()->y();
- for (int i = 0; i < d->particles.count(); ++i) {
- const QDeclarativeParticle &particle = d->particles.at(i);
- if(particle.x > maxX)
- maxX = particle.x;
- if(particle.x < minX)
- minX = particle.x;
- if(particle.y > maxY)
- maxY = particle.y;
- if(particle.y < minY)
- minY = particle.y;
- }
-
- int myWidth = (int)(maxX-minX+0.5)+d->image.width();
- int myX = (int)(minX - parentX);
- int myHeight = (int)(maxY-minY+0.5)+d->image.height();
- int myY = (int)(minY - parentY);
- setWidth(myWidth);
- setHeight(myHeight);
- setX(myX);
- setY(myY);
-}
-
-void QDeclarativeParticles::paint(QPainter *p, const QStyleOptionGraphicsItem *, QWidget *)
-{
- Q_UNUSED(p);
- //painting is done by the ParticlesPainter, so it can have the right size
-}
-
-void QDeclarativeParticlesPainter::paint(QPainter *p, const QStyleOptionGraphicsItem *, QWidget *)
-{
- if (d->image.isNull() || d->particles.isEmpty())
- return;
-
- const int myX = x() + parentItem()->x();
- const int myY = y() + parentItem()->y();
-
-#if (QT_VERSION >= QT_VERSION_CHECK(4,7,0))
- QVarLengthArray<QPainter::PixmapFragment, 256> pixmapData;
-#else
- QVarLengthArray<QDrawPixmaps::Data, 256> pixmapData;
-#endif
- pixmapData.resize(d->particles.count());
-
- const QRectF sourceRect = d->image.rect();
- qreal halfPWidth = sourceRect.width()/2.;
- qreal halfPHeight = sourceRect.height()/2.;
- for (int i = 0; i < d->particles.count(); ++i) {
- const QDeclarativeParticle &particle = d->particles.at(i);
-#if (QT_VERSION >= QT_VERSION_CHECK(4,7,0))
- pixmapData[i].x = particle.x - myX + halfPWidth;
- pixmapData[i].y = particle.y - myY + halfPHeight;
-#else
- pixmapData[i].point = QPointF(particle.x - myX + halfPWidth, particle.y - myY + halfPHeight);
-#endif
- pixmapData[i].opacity = particle.opacity;
-
- //these never change
- pixmapData[i].rotation = 0;
- pixmapData[i].scaleX = 1;
- pixmapData[i].scaleY = 1;
-#if (QT_VERSION >= QT_VERSION_CHECK(4,7,0))
- pixmapData[i].sourceLeft = sourceRect.left();
- pixmapData[i].sourceTop = sourceRect.top();
- pixmapData[i].width = sourceRect.width();
- pixmapData[i].height = sourceRect.height();
-#else
- pixmapData[i].source = sourceRect;
-#endif
- }
-#if (QT_VERSION >= QT_VERSION_CHECK(4,7,0))
- p->drawPixmapFragments(pixmapData.data(), d->particles.count(), d->image);
-#else
- qDrawPixmaps(p, pixmapData.data(), d->particles.count(), d->image);
-#endif
-}
-
-void QDeclarativeParticles::componentComplete()
-{
- Q_D(QDeclarativeParticles);
- QDeclarativeItem::componentComplete();
- if (d->count && d->emissionRate) {
- d->paintItem->updateSize();
- d->clock.start();
- }
- if (d->lifeSpanDev > d->lifeSpan)
- d->lifeSpanDev = d->lifeSpan;
-}
-
-QT_END_NAMESPACE
diff --git a/src/declarative/graphicsitems/qdeclarativeparticles_p.h b/src/declarative/graphicsitems/qdeclarativeparticles_p.h
deleted file mode 100644
index 06acbb9..0000000
--- a/src/declarative/graphicsitems/qdeclarativeparticles_p.h
+++ /dev/null
@@ -1,258 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
-** All rights reserved.
-** Contact: Nokia Corporation (qt-info@nokia.com)
-**
-** This file is part of the QtDeclarative module of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** No Commercial Usage
-** This file contains pre-release code and may not be distributed.
-** You may use this file in accordance with the terms and conditions
-** contained in the Technology Preview License Agreement accompanying
-** this package.
-**
-** GNU Lesser General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU Lesser
-** General Public License version 2.1 as published by the Free Software
-** Foundation and appearing in the file LICENSE.LGPL included in the
-** packaging of this file. Please review the following information to
-** ensure the GNU Lesser General Public License version 2.1 requirements
-** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
-**
-** In addition, as a special exception, Nokia gives you certain additional
-** rights. These rights are described in the Nokia Qt LGPL Exception
-** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
-**
-** If you have questions regarding the use of this file, please contact
-** Nokia at qt-info@nokia.com.
-**
-**
-**
-**
-**
-**
-**
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#ifndef QDECLARATIVEPARTICLES_H
-#define QDECLARATIVEPARTICLES_H
-
-#include "qdeclarativeitem.h"
-
-QT_BEGIN_HEADER
-
-QT_BEGIN_NAMESPACE
-
-QT_MODULE(Declarative)
-
-class QDeclarativeParticle;
-class QDeclarativeParticles;
-class Q_DECLARATIVE_EXPORT QDeclarativeParticleMotion : public QObject
-{
- Q_OBJECT
-public:
- QDeclarativeParticleMotion(QObject *parent=0);
-
- virtual void advance(QDeclarativeParticle &, int interval);
- virtual void created(QDeclarativeParticle &);
- virtual void destroy(QDeclarativeParticle &);
-};
-
-class Q_DECLARATIVE_EXPORT QDeclarativeParticleMotionLinear : public QDeclarativeParticleMotion
-{
- Q_OBJECT
-public:
- QDeclarativeParticleMotionLinear(QObject *parent=0)
- : QDeclarativeParticleMotion(parent) {}
-
- virtual void advance(QDeclarativeParticle &, int interval);
-};
-
-class Q_DECLARATIVE_EXPORT QDeclarativeParticleMotionGravity : public QDeclarativeParticleMotion
-{
- Q_OBJECT
-
- Q_PROPERTY(qreal xattractor READ xAttractor WRITE setXAttractor NOTIFY xattractorChanged)
- Q_PROPERTY(qreal yattractor READ yAttractor WRITE setYAttractor NOTIFY yattractorChanged)
- Q_PROPERTY(qreal acceleration READ acceleration WRITE setAcceleration NOTIFY accelerationChanged)
-public:
- QDeclarativeParticleMotionGravity(QObject *parent=0)
- : QDeclarativeParticleMotion(parent), _xAttr(0.0), _yAttr(0.0), _accel(0.00005) {}
-
- qreal xAttractor() const { return _xAttr; }
- void setXAttractor(qreal x);
-
- qreal yAttractor() const { return _yAttr; }
- void setYAttractor(qreal y);
-
- qreal acceleration() const { return _accel * 1000000; }
- void setAcceleration(qreal accel);
-
- virtual void advance(QDeclarativeParticle &, int interval);
-
-Q_SIGNALS:
- void xattractorChanged();
- void yattractorChanged();
- void accelerationChanged();
-
-private:
- qreal _xAttr;
- qreal _yAttr;
- qreal _accel;
-};
-
-class Q_DECLARATIVE_EXPORT QDeclarativeParticleMotionWander : public QDeclarativeParticleMotion
-{
- Q_OBJECT
-public:
- QDeclarativeParticleMotionWander()
- : QDeclarativeParticleMotion(), particles(0), _xvariance(0), _yvariance(0) {}
-
- virtual void advance(QDeclarativeParticle &, int interval);
- virtual void created(QDeclarativeParticle &);
- virtual void destroy(QDeclarativeParticle &);
-
- struct Data {
- qreal x_targetV;
- qreal y_targetV;
- qreal x_peak;
- qreal y_peak;
- qreal x_var;
- qreal y_var;
- };
-
- Q_PROPERTY(qreal xvariance READ xVariance WRITE setXVariance NOTIFY xvarianceChanged)
- qreal xVariance() const { return _xvariance * 1000.0; }
- void setXVariance(qreal var);
-
- Q_PROPERTY(qreal yvariance READ yVariance WRITE setYVariance NOTIFY yvarianceChanged)
- qreal yVariance() const { return _yvariance * 1000.0; }
- void setYVariance(qreal var);
-
- Q_PROPERTY(qreal pace READ pace WRITE setPace NOTIFY paceChanged)
- qreal pace() const { return _pace * 1000.0; }
- void setPace(qreal pace);
-
-Q_SIGNALS:
- void xvarianceChanged();
- void yvarianceChanged();
- void paceChanged();
-
-private:
- QDeclarativeParticles *particles;
- qreal _xvariance;
- qreal _yvariance;
- qreal _pace;
-};
-
-class QDeclarativeParticlesPrivate;
-class Q_DECLARATIVE_EXPORT QDeclarativeParticles : public QDeclarativeItem
-{
- Q_OBJECT
-
- Q_PROPERTY(QUrl source READ source WRITE setSource NOTIFY sourceChanged)
- Q_PROPERTY(int count READ count WRITE setCount NOTIFY countChanged)
- Q_PROPERTY(int emissionRate READ emissionRate WRITE setEmissionRate NOTIFY emissionRateChanged)
- Q_PROPERTY(qreal emissionVariance READ emissionVariance WRITE setEmissionVariance NOTIFY emissionVarianceChanged)
- Q_PROPERTY(int lifeSpan READ lifeSpan WRITE setLifeSpan NOTIFY lifeSpanChanged)
- Q_PROPERTY(int lifeSpanDeviation READ lifeSpanDeviation WRITE setLifeSpanDeviation NOTIFY lifeSpanDeviationChanged)
- Q_PROPERTY(int fadeInDuration READ fadeInDuration WRITE setFadeInDuration NOTIFY fadeInDurationChanged)
- Q_PROPERTY(int fadeOutDuration READ fadeOutDuration WRITE setFadeOutDuration NOTIFY fadeOutDurationChanged)
- Q_PROPERTY(qreal angle READ angle WRITE setAngle NOTIFY angleChanged)
- Q_PROPERTY(qreal angleDeviation READ angleDeviation WRITE setAngleDeviation NOTIFY angleDeviationChanged)
- Q_PROPERTY(qreal velocity READ velocity WRITE setVelocity NOTIFY velocityChanged)
- Q_PROPERTY(qreal velocityDeviation READ velocityDeviation WRITE setVelocityDeviation NOTIFY velocityDeviationChanged)
- Q_PROPERTY(QDeclarativeParticleMotion *motion READ motion WRITE setMotion NOTIFY motionChanged)
- Q_CLASSINFO("DefaultProperty", "motion")
-
-public:
- QDeclarativeParticles(QDeclarativeItem *parent=0);
- ~QDeclarativeParticles();
-
- QUrl source() const;
- void setSource(const QUrl &);
-
- int count() const;
- void setCount(int cnt);
-
- int emissionRate() const;
- void setEmissionRate(int);
-
- qreal emissionVariance() const;
- void setEmissionVariance(qreal);
-
- int lifeSpan() const;
- void setLifeSpan(int);
-
- int lifeSpanDeviation() const;
- void setLifeSpanDeviation(int);
-
- int fadeInDuration() const;
- void setFadeInDuration(int);
-
- int fadeOutDuration() const;
- void setFadeOutDuration(int);
-
- qreal angle() const;
- void setAngle(qreal);
-
- qreal angleDeviation() const;
- void setAngleDeviation(qreal);
-
- qreal velocity() const;
- void setVelocity(qreal);
-
- qreal velocityDeviation() const;
- void setVelocityDeviation(qreal);
-
- QDeclarativeParticleMotion *motion() const;
- void setMotion(QDeclarativeParticleMotion *);
-
- void paint(QPainter *, const QStyleOptionGraphicsItem *, QWidget *);
-
-public Q_SLOTS:
- void burst(int count, int emissionRate=-1);
-
-protected:
- virtual void componentComplete();
-
-Q_SIGNALS:
- void sourceChanged();
- void countChanged();
- void emissionRateChanged();
- void emissionVarianceChanged();
- void lifeSpanChanged();
- void lifeSpanDeviationChanged();
- void fadeInDurationChanged();
- void fadeOutDurationChanged();
- void angleChanged();
- void angleDeviationChanged();
- void velocityChanged();
- void velocityDeviationChanged();
- void emittingChanged();
- void motionChanged();
-
-private Q_SLOTS:
- void imageLoaded();
-
-private:
- Q_DISABLE_COPY(QDeclarativeParticles)
- Q_DECLARE_PRIVATE_D(QGraphicsItem::d_ptr.data(), QDeclarativeParticles)
-};
-
-QT_END_NAMESPACE
-
-QML_DECLARE_TYPE(QDeclarativeParticleMotion)
-QML_DECLARE_TYPE(QDeclarativeParticleMotionLinear)
-QML_DECLARE_TYPE(QDeclarativeParticleMotionGravity)
-QML_DECLARE_TYPE(QDeclarativeParticleMotionWander)
-QML_DECLARE_TYPE(QDeclarativeParticles)
-
-QT_END_HEADER
-
-#endif
diff --git a/src/imports/imports.pro b/src/imports/imports.pro
index 8b47043..3886f5c 100644
--- a/src/imports/imports.pro
+++ b/src/imports/imports.pro
@@ -1,6 +1,6 @@
TEMPLATE = subdirs
-SUBDIRS += widgets
+SUBDIRS += widgets particles
contains(QT_CONFIG, webkit): SUBDIRS += webkit
contains(QT_CONFIG, multimedia): SUBDIRS += multimedia
diff --git a/src/imports/particles/particles.cpp b/src/imports/particles/particles.cpp
new file mode 100644
index 0000000..ae3f318
--- /dev/null
+++ b/src/imports/particles/particles.cpp
@@ -0,0 +1,69 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtDeclarative/qdeclarativeextensionplugin.h>
+#include <QtDeclarative/qdeclarative.h>
+
+#include "qdeclarativeparticles_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QParticlesQmlModule : public QDeclarativeExtensionPlugin
+{
+ Q_OBJECT
+public:
+ virtual void registerTypes(const char *uri)
+ {
+ Q_ASSERT(QLatin1String(uri) == QLatin1String("Qt.labs.particles"));
+ qmlRegisterType<QDeclarativeParticleMotion>(uri,1,0,"ParticleMotion");
+ qmlRegisterType<QDeclarativeParticleMotionGravity>(uri,1,0,"ParticleMotionGravity");
+ qmlRegisterType<QDeclarativeParticleMotionLinear>(uri,1,0,"ParticleMotionLinear");
+ qmlRegisterType<QDeclarativeParticleMotionWander>(uri,1,0,"ParticleMotionWander");
+ qmlRegisterType<QDeclarativeParticles>(uri,1,0,"Particles");
+ }
+};
+
+QT_END_NAMESPACE
+
+#include "particles.moc"
+
+Q_EXPORT_PLUGIN2(particlesqmlmodule, QT_PREPEND_NAMESPACE(QParticlesQmlModule));
+
diff --git a/src/imports/particles/particles.pro b/src/imports/particles/particles.pro
new file mode 100644
index 0000000..2a0b8f5
--- /dev/null
+++ b/src/imports/particles/particles.pro
@@ -0,0 +1,21 @@
+TARGET = particles
+TARGETPATH = Qt/labs/particles
+include(../qimportbase.pri)
+
+QT += declarative
+
+SOURCES += \
+ qdeclarativeparticles.cpp \
+ particles.cpp
+
+HEADERS += \
+ qdeclarativeparticles_p.h
+
+QTDIR_build:DESTDIR = $$QT_BUILD_TREE/imports/$$TARGETPATH
+target.path = $$TARGETPATH
+
+# install qmldir file
+qmldir.files += qmldir
+qmldir.path = $$[QT_INSTALL_IMPORTS]/$$TARGETPATH
+
+INSTALLS += target qmldir
diff --git a/src/imports/particles/qdeclarativeparticles.cpp b/src/imports/particles/qdeclarativeparticles.cpp
new file mode 100644
index 0000000..caa0754
--- /dev/null
+++ b/src/imports/particles/qdeclarativeparticles.cpp
@@ -0,0 +1,1316 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtDeclarative module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qdeclarativeparticles_p.h"
+
+#include <private/qdeclarativeitem_p.h>
+
+#include <private/qdeclarativepixmapcache_p.h>
+#include <private/qfxperf_p_p.h>
+#include <private/qdeclarativeanimation_p_p.h>
+
+#include <QPainter>
+#include <QtGui/qdrawutil.h>
+#include <QVarLengthArray>
+
+#include <stdlib.h>
+#include <math.h>
+
+#ifndef M_PI
+#define M_PI 3.14159265358979323846
+#define M_PI_2 (M_PI / 2.)
+#endif
+#ifndef INT_MAX
+#define INT_MAX 2147483647
+#endif
+
+QT_BEGIN_NAMESPACE
+#define PI_SQR 9.8696044
+// parabolic approximation
+inline qreal fastSin(qreal theta)
+{
+ const qreal b = 4 / M_PI;
+ const qreal c = -4 / PI_SQR;
+
+ qreal y = b * theta + c * theta * qAbs(theta);
+ return y;
+}
+
+inline qreal fastCos(qreal theta)
+{
+ theta += M_PI_2;
+ if (theta > M_PI)
+ theta -= 2 * M_PI;
+
+ return fastSin(theta);
+}
+
+class QDeclarativeParticle
+{
+public:
+ QDeclarativeParticle(int time) : lifeSpan(1000), fadeOutAge(800)
+ , opacity(0), birthTime(time), x_velocity(0), y_velocity(0)
+ , state(FadeIn), data(0)
+ {
+ }
+
+ int lifeSpan;
+ int fadeOutAge;
+ qreal x;
+ qreal y;
+ qreal opacity;
+ int birthTime;
+ qreal x_velocity;
+ qreal y_velocity;
+ enum State { FadeIn, Solid, FadeOut };
+ State state;
+ void *data;
+};
+
+//---------------------------------------------------------------------------
+
+/*!
+ \class QDeclarativeParticleMotion
+ \ingroup group_effects
+ \brief The QDeclarativeParticleMotion class is the base class for particle motion.
+ \internal
+
+ This class causes the particles to remain static.
+*/
+
+/*!
+ Constructs a QDeclarativeParticleMotion with parent object \a parent.
+*/
+QDeclarativeParticleMotion::QDeclarativeParticleMotion(QObject *parent) :
+ QObject(parent)
+{
+}
+
+/*!
+ Move the \a particle to its new position. \a interval is the number of
+ milliseconds elapsed since it was last moved.
+*/
+void QDeclarativeParticleMotion::advance(QDeclarativeParticle &particle, int interval)
+{
+ Q_UNUSED(particle);
+ Q_UNUSED(interval);
+}
+
+/*!
+ The \a particle has just been created. Some motion strategies require
+ additional state information. This can be allocated by this function.
+*/
+void QDeclarativeParticleMotion::created(QDeclarativeParticle &particle)
+{
+ Q_UNUSED(particle);
+}
+
+/*!
+ The \a particle is about to be destroyed. Any additional memory
+ that has been allocated for the particle should be freed.
+*/
+void QDeclarativeParticleMotion::destroy(QDeclarativeParticle &particle)
+{
+ Q_UNUSED(particle);
+}
+
+/*!
+ \qmlclass ParticleMotionLinear
+ \since 4.7
+ \brief The ParticleMotionLinear object moves particles linearly.
+
+ \sa Particles
+*/
+
+/*!
+ \internal
+ \class QDeclarativeParticleMotionLinear
+ \ingroup group_effects
+ \brief The QDeclarativeParticleMotionLinear class moves the particles linearly.
+*/
+
+void QDeclarativeParticleMotionLinear::advance(QDeclarativeParticle &p, int interval)
+{
+ p.x += interval * p.x_velocity;
+ p.y += interval * p.y_velocity;
+}
+
+/*!
+ \qmlclass ParticleMotionGravity
+ \since 4.7
+ \brief The ParticleMotionGravity object moves particles towards a point.
+
+ \sa Particles
+*/
+
+/*!
+ \internal
+ \class QDeclarativeParticleMotionGravity
+ \ingroup group_effects
+ \brief The QDeclarativeParticleMotionGravity class moves the particles towards a point.
+*/
+
+/*!
+ \qmlproperty qreal ParticleMotionGravity::xattractor
+ \qmlproperty qreal ParticleMotionGravity::yattractor
+ These properties hold the x and y coordinates of the point attracting the particles.
+*/
+
+/*!
+ \qmlproperty qreal ParticleMotionGravity::acceleration
+ This property holds the acceleration to apply to the particles.
+*/
+
+/*!
+ \property QDeclarativeParticleMotionGravity::xattractor
+ \brief the x coordinate of the point attracting the particles.
+*/
+
+/*!
+ \property QDeclarativeParticleMotionGravity::yattractor
+ \brief the y coordinate of the point attracting the particles.
+*/
+
+/*!
+ \property QDeclarativeParticleMotionGravity::acceleration
+ \brief the acceleration to apply to the particles.
+*/
+
+void QDeclarativeParticleMotionGravity::setXAttractor(qreal x)
+{
+ if (qFuzzyCompare(x, _xAttr))
+ return;
+ _xAttr = x;
+ emit xattractorChanged();
+}
+
+void QDeclarativeParticleMotionGravity::setYAttractor(qreal y)
+{
+ if (qFuzzyCompare(y, _yAttr))
+ return;
+ _yAttr = y;
+ emit yattractorChanged();
+}
+
+void QDeclarativeParticleMotionGravity::setAcceleration(qreal accel)
+{
+ qreal scaledAccel = accel/1000000.0;
+ if (qFuzzyCompare(scaledAccel, _accel))
+ return;
+ _accel = scaledAccel;
+ emit accelerationChanged();
+}
+
+void QDeclarativeParticleMotionGravity::advance(QDeclarativeParticle &p, int interval)
+{
+ qreal xdiff = p.x - _xAttr;
+ qreal ydiff = p.y - _yAttr;
+
+ qreal xcomp = xdiff / (xdiff + ydiff);
+ qreal ycomp = ydiff / (xdiff + ydiff);
+
+ p.x_velocity += xcomp * _accel * interval;
+ p.y_velocity += ycomp * _accel * interval;
+
+ p.x += interval * p.x_velocity;
+ p.y += interval * p.y_velocity;
+}
+
+/*!
+ \qmlclass ParticleMotionWander
+ \since 4.7
+ \brief The ParticleMotionWander object moves particles in a somewhat random fashion.
+
+ The particles will continue roughly in the original direction, however will randomly
+ drift to each side.
+
+ The code below produces an effect similar to falling snow.
+
+ \qml
+Rectangle {
+ width: 240
+ height: 320
+ color: "black"
+
+ Particles {
+ y: 0
+ width: parent.width
+ height: 30
+ source: "star.png"
+ lifeSpan: 5000
+ count: 50
+ angle: 70
+ angleDeviation: 36
+ velocity: 30
+ velocityDeviation: 10
+ ParticleMotionWander {
+ xvariance: 30
+ pace: 100
+ }
+ }
+}
+ \endqml
+
+ \sa Particles
+*/
+
+/*!
+ \internal
+ \class QDeclarativeParticleMotionWander
+ \ingroup group_effects
+ \brief The QDeclarativeParticleMotionWander class moves particles in a somewhat random fashion.
+
+ The particles will continue roughly in the original direction, however will randomly
+ drift to each side.
+*/
+
+/*!
+ \qmlproperty qreal QDeclarativeParticleMotionWander::xvariance
+ \qmlproperty qreal QDeclarativeParticleMotionWander::yvariance
+
+ These properties set the amount to wander in the x and y directions.
+*/
+
+/*!
+ \qmlproperty qreal QDeclarativeParticleMotionWander::pace
+ This property holds how quickly the paricles will move from side to side.
+*/
+
+void QDeclarativeParticleMotionWander::advance(QDeclarativeParticle &p, int interval)
+{
+ if (!particles)
+ particles = qobject_cast<QDeclarativeParticles*>(parent());
+ if (particles) {
+ Data *d = (Data*)p.data;
+ if (_xvariance != 0.) {
+ qreal xdiff = p.x_velocity - d->x_targetV;
+ if ((xdiff > d->x_peak && d->x_var > 0.0) || (xdiff < -d->x_peak && d->x_var < 0.0)) {
+ d->x_var = -d->x_var;
+ d->x_peak = _xvariance + _xvariance * qreal(qrand()) / RAND_MAX;
+ }
+ p.x_velocity += d->x_var * interval;
+ }
+ p.x += interval * p.x_velocity;
+
+ if (_yvariance != 0.) {
+ qreal ydiff = p.y_velocity - d->y_targetV;
+ if ((ydiff > d->y_peak && d->y_var > 0.0) || (ydiff < -d->y_peak && d->y_var < 0.0)) {
+ d->y_var = -d->y_var;
+ d->y_peak = _yvariance + _yvariance * qreal(qrand()) / RAND_MAX;
+ }
+ p.y_velocity += d->y_var * interval;
+ }
+ p.y += interval * p.y_velocity;
+ }
+}
+
+void QDeclarativeParticleMotionWander::created(QDeclarativeParticle &p)
+{
+ if (!p.data) {
+ Data *d = new Data;
+ p.data = (void*)d;
+ d->x_targetV = p.x_velocity;
+ d->y_targetV = p.y_velocity;
+ d->x_peak = _xvariance;
+ d->y_peak = _yvariance;
+ d->x_var = _pace * qreal(qrand()) / RAND_MAX / 1000.0;
+ d->y_var = _pace * qreal(qrand()) / RAND_MAX / 1000.0;
+ }
+}
+
+void QDeclarativeParticleMotionWander::destroy(QDeclarativeParticle &p)
+{
+ if (p.data)
+ delete (Data*)p.data;
+}
+
+void QDeclarativeParticleMotionWander::setXVariance(qreal var)
+{
+ qreal scaledVar = var / 1000.0;
+ if (qFuzzyCompare(scaledVar, _xvariance))
+ return;
+ _xvariance = scaledVar;
+ emit xvarianceChanged();
+}
+
+void QDeclarativeParticleMotionWander::setYVariance(qreal var)
+{
+ qreal scaledVar = var / 1000.0;
+ if (qFuzzyCompare(scaledVar, _yvariance))
+ return;
+ _yvariance = scaledVar;
+ emit yvarianceChanged();
+}
+
+void QDeclarativeParticleMotionWander::setPace(qreal pace)
+{
+ qreal scaledPace = pace / 1000.0;
+ if (qFuzzyCompare(scaledPace, _pace))
+ return;
+ _pace = scaledPace;
+ emit paceChanged();
+}
+
+//---------------------------------------------------------------------------
+class QDeclarativeParticlesPainter : public QDeclarativeItem
+{
+public:
+ QDeclarativeParticlesPainter(QDeclarativeParticlesPrivate *p, QDeclarativeItem* parent)
+ : QDeclarativeItem(parent), d(p)
+ {
+ setFlag(QGraphicsItem::ItemHasNoContents, false);
+ maxX = minX = maxY = minY = 0;
+ }
+
+ void paint(QPainter *, const QStyleOptionGraphicsItem *, QWidget *);
+
+ void updateSize();
+
+ qreal maxX;
+ qreal minX;
+ qreal maxY;
+ qreal minY;
+ QDeclarativeParticlesPrivate* d;
+};
+
+//---------------------------------------------------------------------------
+class QDeclarativeParticlesPrivate : public QDeclarativeItemPrivate
+{
+ Q_DECLARE_PUBLIC(QDeclarativeParticles)
+public:
+ QDeclarativeParticlesPrivate()
+ : count(1), emissionRate(-1), emissionVariance(0.5), lifeSpan(1000)
+ , lifeSpanDev(1000), fadeInDur(200), fadeOutDur(300)
+ , angle(0), angleDev(0), velocity(0), velocityDev(0), emissionCarry(0.)
+ , addParticleTime(0), addParticleCount(0), lastAdvTime(0)
+ , motion(0), pendingPixmapCache(false), clock(this)
+ {
+ }
+
+ ~QDeclarativeParticlesPrivate()
+ {
+ }
+
+ void init()
+ {
+ Q_Q(QDeclarativeParticles);
+ paintItem = new QDeclarativeParticlesPainter(this, q);
+ }
+
+ void tick(int time);
+ void createParticle(int time);
+ void updateOpacity(QDeclarativeParticle &p, int age);
+
+ QUrl url;
+ QPixmap image;
+ int count;
+ int emissionRate;
+ qreal emissionVariance;
+ int lifeSpan;
+ int lifeSpanDev;
+ int fadeInDur;
+ int fadeOutDur;
+ qreal angle;
+ qreal angleDev;
+ qreal velocity;
+ qreal velocityDev;
+ qreal emissionCarry;
+ int addParticleTime;
+ int addParticleCount;
+ int lastAdvTime;
+ QDeclarativeParticleMotion *motion;
+ QDeclarativeParticlesPainter *paintItem;
+
+ bool pendingPixmapCache;
+
+ QList<QPair<int, int> > bursts;//countLeft, emissionRate pairs
+ QList<QDeclarativeParticle> particles;
+ QTickAnimationProxy<QDeclarativeParticlesPrivate, &QDeclarativeParticlesPrivate::tick> clock;
+
+};
+
+void QDeclarativeParticlesPrivate::tick(int time)
+{
+ Q_Q(QDeclarativeParticles);
+ if (!motion)
+ motion = new QDeclarativeParticleMotionLinear(q);
+
+ int oldCount = particles.count();
+ int removed = 0;
+ int interval = time - lastAdvTime;
+ for (int i = 0; i < particles.count(); ) {
+ QDeclarativeParticle &particle = particles[i];
+ int age = time - particle.birthTime;
+ if (age >= particle.lifeSpan) {
+ QDeclarativeParticle part = particles.takeAt(i);
+ motion->destroy(part);
+ ++removed;
+ } else {
+ updateOpacity(particle, age);
+ motion->advance(particle, interval);
+ ++i;
+ }
+ }
+
+ if(emissionRate == -1)//Otherwise leave emission to the emission rate
+ while(removed-- && ((count == -1) || particles.count() < count))
+ createParticle(time);
+
+ if (!addParticleTime)
+ addParticleTime = time;
+
+ //Possibly emit new particles
+ if (((count == -1) || particles.count() < count) && emissionRate
+ && !(count==-1 && emissionRate==-1)) {
+ int emissionCount = -1;
+ if (emissionRate != -1){
+ qreal variance = 1.;
+ if (emissionVariance > 0.){
+ variance += (qreal(qrand())/RAND_MAX) * emissionVariance * (qrand()%2?-1.:1.);
+ }
+ qreal emission = emissionRate * (qreal(interval)/1000.);
+ emission = emission * variance + emissionCarry;
+ double tmpDbl;
+ emissionCarry = modf(emission, &tmpDbl);
+ emissionCount = (int)tmpDbl;
+ emissionCount = qMax(0,emissionCount);
+ }
+ while(((count == -1) || particles.count() < count) &&
+ (emissionRate==-1 || emissionCount--))
+ createParticle(time);
+ }
+
+ //Deal with emissions from requested bursts
+ for(int i=0; i<bursts.size(); i++){
+ int emission = 0;
+ if(bursts[i].second == -1){
+ emission = bursts[i].first;
+ }else{
+ qreal variance = 1.;
+ if (emissionVariance > 0.){
+ variance += (qreal(qrand())/RAND_MAX) * emissionVariance * (qrand()%2?-1.:1.);
+ }
+ qreal workingEmission = bursts[i].second * (qreal(interval)/1000.);
+ workingEmission *= variance;
+ emission = (int)workingEmission;
+ emission = qMax(emission, 0);
+ }
+ emission = qMin(emission, bursts[i].first);
+ bursts[i].first -= emission;
+ while(emission--)
+ createParticle(time);
+ }
+ for(int i=bursts.size()-1; i>=0; i--)
+ if(bursts[i].first <= 0)
+ bursts.removeAt(i);
+
+ lastAdvTime = time;
+ paintItem->updateSize();
+ paintItem->update();
+ if (!(oldCount || particles.count()) && (!count || !emissionRate) && bursts.isEmpty()) {
+ lastAdvTime = 0;
+ clock.stop();
+ }
+}
+
+void QDeclarativeParticlesPrivate::createParticle(int time)
+{
+#ifdef Q_ENABLE_PERFORMANCE_LOG
+ QDeclarativePerfTimer<QDeclarativePerf::CreateParticle> x;
+#endif
+ Q_Q(QDeclarativeParticles);
+ QDeclarativeParticle p(time);
+ p.x = q->x() + q->width() * qreal(qrand()) / RAND_MAX - image.width()/2.0;
+ p.y = q->y() + q->height() * qreal(qrand()) / RAND_MAX - image.height()/2.0;
+ p.lifeSpan = lifeSpan;
+ if (lifeSpanDev)
+ p.lifeSpan += int(lifeSpanDev/2 - lifeSpanDev * qreal(qrand()) / RAND_MAX);
+ p.fadeOutAge = p.lifeSpan - fadeOutDur;
+ if (fadeInDur == 0.) {
+ p.state= QDeclarativeParticle::Solid;
+ p.opacity = 1.0;
+ }
+ qreal a = angle;
+ if (angleDev)
+ a += angleDev/2 - angleDev * qreal(qrand()) / RAND_MAX;
+ if (a > M_PI)
+ a = a - 2 * M_PI;
+ qreal v = velocity;
+ if (velocityDev)
+ v += velocityDev/2 - velocityDev * qreal(qrand()) / RAND_MAX;
+ p.x_velocity = v * fastCos(a);
+ p.y_velocity = v * fastSin(a);
+ particles.append(p);
+ motion->created(particles.last());
+}
+
+void QDeclarativeParticlesPrivate::updateOpacity(QDeclarativeParticle &p, int age)
+{
+ switch (p.state) {
+ case QDeclarativeParticle::FadeIn:
+ if (age <= fadeInDur) {
+ p.opacity = qreal(age) / fadeInDur;
+ break;
+ } else {
+ p.opacity = 1.0;
+ p.state = QDeclarativeParticle::Solid;
+ // Fall through
+ }
+ case QDeclarativeParticle::Solid:
+ if (age <= p.fadeOutAge) {
+ break;
+ } else {
+ p.state = QDeclarativeParticle::FadeOut;
+ // Fall through
+ }
+ case QDeclarativeParticle::FadeOut:
+ p.opacity = qreal(p.lifeSpan - age) / fadeOutDur;
+ break;
+ }
+}
+
+/*!
+ \qmlclass Particles
+ \since 4.7
+ \brief The Particles object generates and moves particles.
+ \inherits Item
+
+ This element provides preliminary support for particles in QML,
+ and may be heavily changed or removed in later versions.
+
+ The particles created by this object cannot be dealt with
+ directly, they can only be controlled through the parameters of
+ the Particles object. The particles are all the same pixmap,
+ specified by the user.
+
+ The particles are painted relative to the parent of the Particles
+ object. Moving the Particles object will not move the particles
+ already emitted.
+
+ The below example creates two differently behaving particle
+ sources. The top one has particles falling from the top like
+ snow, the lower one has particles expelled up like a fountain.
+
+ \qml
+Rectangle {
+ width: 240
+ height: 320
+ color: "black"
+ Particles {
+ y: 0
+ width: parent.width
+ height: 30
+ source: "star.png"
+ lifeSpan: 5000
+ count: 50
+ angle: 70
+ angleDeviation: 36
+ velocity: 30
+ velocityDeviation: 10
+ ParticleMotionWander {
+ xvariance: 30
+ pace: 100
+ }
+ }
+ Particles {
+ y: 300
+ x: 120
+ width: 1
+ height: 1
+ source: "star.png"
+ lifeSpan: 5000
+ count: 200
+ angle: 270
+ angleDeviation: 45
+ velocity: 50
+ velocityDeviation: 30
+ ParticleMotionGravity {
+ yattractor: 1000
+ xattractor: 0
+ acceleration: 25
+ }
+ }
+}
+ \endqml
+ \image particles.gif
+*/
+
+/*!
+ \internal
+ \class QDeclarativeParticles
+ \ingroup group_effects
+ \brief The QDeclarativeParticles class generates and moves particles.
+*/
+
+QDeclarativeParticles::QDeclarativeParticles(QDeclarativeItem *parent)
+ : QDeclarativeItem(*(new QDeclarativeParticlesPrivate), parent)
+{
+ Q_D(QDeclarativeParticles);
+ d->init();
+}
+
+QDeclarativeParticles::~QDeclarativeParticles()
+{
+ Q_D(QDeclarativeParticles);
+ if (d->pendingPixmapCache)
+ QDeclarativePixmapCache::cancel(d->url, this);
+}
+
+/*!
+ \qmlproperty string Particles::source
+ This property holds the URL of the particle image.
+*/
+
+/*!
+ \property QDeclarativeParticles::source
+ \brief the URL of the particle image.
+*/
+QUrl QDeclarativeParticles::source() const
+{
+ Q_D(const QDeclarativeParticles);
+ return d->url;
+}
+
+void QDeclarativeParticles::imageLoaded()
+{
+ Q_D(QDeclarativeParticles);
+ d->pendingPixmapCache = false;
+ QDeclarativePixmapCache::get(d->url, &d->image);
+ d->paintItem->updateSize();
+ d->paintItem->update();
+}
+
+void QDeclarativeParticles::setSource(const QUrl &name)
+{
+ Q_D(QDeclarativeParticles);
+
+ if ((d->url.isEmpty() == name.isEmpty()) && name == d->url)
+ return;
+
+ if (d->pendingPixmapCache) {
+ QDeclarativePixmapCache::cancel(d->url, this);
+ d->pendingPixmapCache = false;
+ }
+ if (name.isEmpty()) {
+ d->url = name;
+ d->image = QPixmap();
+ d->paintItem->updateSize();
+ d->paintItem->update();
+ } else {
+ d->url = name;
+ Q_ASSERT(!name.isRelative());
+ QDeclarativePixmapReply::Status status = QDeclarativePixmapCache::get(d->url, &d->image);
+ if (status != QDeclarativePixmapReply::Ready && status != QDeclarativePixmapReply::Error) {
+ QDeclarativePixmapReply *reply = QDeclarativePixmapCache::request(qmlEngine(this), d->url);
+ connect(reply, SIGNAL(finished()), this, SLOT(imageLoaded()));
+ d->pendingPixmapCache = true;
+ } else {
+ //### unify with imageLoaded
+ d->paintItem->updateSize();
+ d->paintItem->update();
+ }
+ }
+ emit sourceChanged();
+}
+
+/*!
+ \qmlproperty int Particles::count
+ This property holds the maximum number of particles
+
+ The particles element emits particles until it has count active
+ particles. When this number is reached, new particles are not emitted until
+ some of the current particles reach the end of their lifespan.
+
+ If count is -1 then there is no maximum number of active particles, and
+ particles will be constantly emitted at the rate specified by emissionRate.
+
+ The default value for count is 1.
+
+ If both count and emissionRate are set to -1, nothing will be emitted.
+
+*/
+
+/*!
+ \property QDeclarativeParticles::count
+ \brief the maximum number of particles
+*/
+int QDeclarativeParticles::count() const
+{
+ Q_D(const QDeclarativeParticles);
+ return d->count;
+}
+
+void QDeclarativeParticles::setCount(int cnt)
+{
+ Q_D(QDeclarativeParticles);
+ if (cnt == d->count)
+ return;
+
+ int oldCount = d->count;
+ d->count = cnt;
+ d->addParticleTime = 0;
+ d->addParticleCount = d->particles.count();
+ if (!oldCount && d->clock.state() != QAbstractAnimation::Running && d->count && d->emissionRate) {
+ d->clock.start();
+ }
+ d->paintItem->updateSize();
+ d->paintItem->update();
+ emit countChanged();
+}
+
+
+/*!
+ \qmlproperty int Particles::emissionRate
+ This property holds the target number of particles to emit every second.
+
+ The particles element will emit up to emissionRate particles every
+ second. Fewer particles may be emitted per second if the maximum number of
+ particles has been reached.
+
+ If emissionRate is set to -1 there is no limit to the number of
+ particles emitted per second, and particles will be instantly emitted to
+ reach the maximum number of particles specified by count.
+
+ The default value for emissionRate is -1.
+
+ If both count and emissionRate are set to -1, nothing will be emitted.
+*/
+
+/*!
+ \property QDeclarativeParticles::emissionRate
+ \brief the emission rate of particles
+*/
+int QDeclarativeParticles::emissionRate() const
+{
+ Q_D(const QDeclarativeParticles);
+ return d->emissionRate;
+}
+void QDeclarativeParticles::setEmissionRate(int er)
+{
+ Q_D(QDeclarativeParticles);
+ if(er == d->emissionRate)
+ return;
+ d->emissionRate = er;
+ if (d->clock.state() != QAbstractAnimation::Running && d->count && d->emissionRate) {
+ d->clock.start();
+ }
+ emit emissionRateChanged();
+}
+
+/*!
+ \qmlproperty qreal Particles::emissionVariance
+ This property holds how inconsistent the rate of particle emissions are.
+ It is a number between 0 (no variance) and 1 (some variance).
+
+ The expected number of particles emitted per second is emissionRate. If
+ emissionVariance is 0 then particles will be emitted consistently throughout
+ each second to reach that number. If emissionVariance is greater than 0 the
+ rate of particle emission will vary randomly throughout the second, with the
+ consequence that the actual number of particles emitted in one second will
+ vary randomly as well.
+
+ emissionVariance is the maximum deviation from emitting
+ emissionRate particles per second. An emissionVariance of 0 means you should
+ get exactly emissionRate particles emitted per second,
+ and an emissionVariance of 1 means you will get between zero and two times
+ emissionRate particles per second, but you should get emissionRate particles
+ per second on average.
+
+ Note that even with an emissionVariance of 0 there may be some variance due
+ to performance and hardware constraints.
+
+ The default value of emissionVariance is 0.5
+*/
+
+/*!
+ \property QDeclarativeParticles::emissionVariance
+ \brief how much the particle emission amounts vary per tick
+*/
+
+qreal QDeclarativeParticles::emissionVariance() const
+{
+ Q_D(const QDeclarativeParticles);
+ return d->emissionVariance;
+}
+
+void QDeclarativeParticles::setEmissionVariance(qreal ev)
+{
+ Q_D(QDeclarativeParticles);
+ if(d->emissionVariance == ev)
+ return;
+ d->emissionVariance = ev;
+ emit emissionVarianceChanged();
+}
+
+/*!
+ \qmlproperty int Particles::lifeSpan
+ \qmlproperty int Particles::lifeSpanDeviation
+
+ These properties describe the life span of each particle.
+
+ The default lifespan for a particle is 1000ms.
+
+ lifeSpanDeviation randomly varies the lifeSpan up to the specified variation. For
+ example, the following creates particles whose lifeSpan will vary
+ from 150ms to 250ms:
+
+ \qml
+Particles {
+ source: "star.png"
+ lifeSpan: 200
+ lifeSpanDeviation: 100
+}
+ \endqml
+*/
+
+/*!
+ \property QDeclarativeParticles::lifeSpan
+ \brief the life span of each particle.
+
+ Default value is 1000ms.
+
+ \sa QDeclarativeParticles::lifeSpanDeviation
+*/
+int QDeclarativeParticles::lifeSpan() const
+{
+ Q_D(const QDeclarativeParticles);
+ return d->lifeSpan;
+}
+
+void QDeclarativeParticles::setLifeSpan(int ls)
+{
+ Q_D(QDeclarativeParticles);
+ if(d->lifeSpan == ls)
+ return;
+ d->lifeSpan = ls;
+ emit lifeSpanChanged();
+}
+
+/*!
+ \property QDeclarativeParticles::lifeSpanDeviation
+ \brief the maximum possible deviation from the set lifeSpan.
+
+ Randomly varies the lifeSpan up to the specified variation. For
+ example, the following creates particles whose lifeSpan will vary
+ from 150ms to 250ms:
+
+\qml
+Particles {
+ source: "star.png"
+ lifeSpan: 200
+ lifeSpanDeviation: 100
+}
+\endqml
+
+ \sa QDeclarativeParticles::lifeSpan
+*/
+int QDeclarativeParticles::lifeSpanDeviation() const
+{
+ Q_D(const QDeclarativeParticles);
+ return d->lifeSpanDev;
+}
+
+void QDeclarativeParticles::setLifeSpanDeviation(int dev)
+{
+ Q_D(QDeclarativeParticles);
+ if(d->lifeSpanDev == dev)
+ return;
+ d->lifeSpanDev = dev;
+ emit lifeSpanDeviationChanged();
+}
+
+/*!
+ \qmlproperty int Particles::fadeInDuration
+ \qmlproperty int Particles::fadeOutDuration
+ These properties hold the time taken to fade the particles in and out.
+
+ By default fade in is 200ms and fade out is 300ms.
+*/
+
+/*!
+ \property QDeclarativeParticles::fadeInDuration
+ \brief the time taken to fade in the particles.
+
+ Default value is 200ms.
+*/
+int QDeclarativeParticles::fadeInDuration() const
+{
+ Q_D(const QDeclarativeParticles);
+ return d->fadeInDur;
+}
+
+void QDeclarativeParticles::setFadeInDuration(int dur)
+{
+ Q_D(QDeclarativeParticles);
+ if (dur < 0.0 || dur == d->fadeInDur)
+ return;
+ d->fadeInDur = dur;
+ emit fadeInDurationChanged();
+}
+
+/*!
+ \property QDeclarativeParticles::fadeOutDuration
+ \brief the time taken to fade out the particles.
+
+ Default value is 300ms.
+*/
+int QDeclarativeParticles::fadeOutDuration() const
+{
+ Q_D(const QDeclarativeParticles);
+ return d->fadeOutDur;
+}
+
+void QDeclarativeParticles::setFadeOutDuration(int dur)
+{
+ Q_D(QDeclarativeParticles);
+ if (dur < 0.0 || d->fadeOutDur == dur)
+ return;
+ d->fadeOutDur = dur;
+ emit fadeOutDurationChanged();
+}
+
+/*!
+ \qmlproperty real Particles::angle
+ \qmlproperty real Particles::angleDeviation
+
+ These properties control particle direction.
+
+ angleDeviation randomly varies the direction up to the specified variation. For
+ example, the following creates particles whose initial direction will
+ vary from 15 degrees to 105 degrees:
+
+ \qml
+Particles {
+ source: "star.png"
+ angle: 60
+ angleDeviation: 90
+}
+ \endqml
+*/
+
+/*!
+ \property QDeclarativeParticles::angle
+ \brief the initial angle of direction.
+
+ \sa QDeclarativeParticles::angleDeviation
+*/
+qreal QDeclarativeParticles::angle() const
+{
+ Q_D(const QDeclarativeParticles);
+ return d->angle * 180.0 / M_PI;
+}
+
+void QDeclarativeParticles::setAngle(qreal angle)
+{
+ Q_D(QDeclarativeParticles);
+ qreal radAngle = angle * M_PI / 180.0;
+ if(radAngle == d->angle)
+ return;
+ d->angle = radAngle;
+ emit angleChanged();
+}
+
+/*!
+ \property QDeclarativeParticles::angleDeviation
+ \brief the maximum possible deviation from the set angle.
+
+ Randomly varies the direction up to the specified variation. For
+ example, the following creates particles whose initial direction will
+ vary from 15 degrees to 105 degrees:
+
+\qml
+Particles {
+ source: "star.png"
+ angle: 60
+ angleDeviation: 90
+}
+\endqml
+
+ \sa QDeclarativeParticles::angle
+*/
+qreal QDeclarativeParticles::angleDeviation() const
+{
+ Q_D(const QDeclarativeParticles);
+ return d->angleDev * 180.0 / M_PI;
+}
+
+void QDeclarativeParticles::setAngleDeviation(qreal dev)
+{
+ Q_D(QDeclarativeParticles);
+ qreal radDev = dev * M_PI / 180.0;
+ if(radDev == d->angleDev)
+ return;
+ d->angleDev = radDev;
+ emit angleDeviationChanged();
+}
+
+/*!
+ \qmlproperty real Particles::velocity
+ \qmlproperty real Particles::velocityDeviation
+
+ These properties control the velocity of the particles.
+
+ velocityDeviation randomly varies the velocity up to the specified variation. For
+ example, the following creates particles whose initial velocity will
+ vary from 40 to 60.
+
+ \qml
+Particles {
+ source: "star.png"
+ velocity: 50
+ velocityDeviation: 20
+}
+ \endqml
+*/
+
+/*!
+ \property QDeclarativeParticles::velocity
+ \brief the initial velocity of the particles.
+
+ \sa QDeclarativeParticles::velocityDeviation
+*/
+qreal QDeclarativeParticles::velocity() const
+{
+ Q_D(const QDeclarativeParticles);
+ return d->velocity * 1000.0;
+}
+
+void QDeclarativeParticles::setVelocity(qreal velocity)
+{
+ Q_D(QDeclarativeParticles);
+ qreal realVel = velocity / 1000.0;
+ if(realVel == d->velocity)
+ return;
+ d->velocity = realVel;
+ emit velocityChanged();
+}
+
+/*!
+ \property QDeclarativeParticles::velocityDeviation
+ \brief the maximum possible deviation from the set velocity.
+
+ Randomly varies the velocity up to the specified variation. For
+ example, the following creates particles whose initial velocity will
+ vary from 40 to 60.
+
+\qml
+Particles {
+ source: "star.png"
+ velocity: 50
+ velocityDeviation: 20
+}
+\endqml
+
+ \sa QDeclarativeParticles::velocity
+*/
+qreal QDeclarativeParticles::velocityDeviation() const
+{
+ Q_D(const QDeclarativeParticles);
+ return d->velocityDev * 1000.0;
+}
+
+void QDeclarativeParticles::setVelocityDeviation(qreal velocity)
+{
+ Q_D(QDeclarativeParticles);
+ qreal realDev = velocity / 1000.0;
+ if(realDev == d->velocityDev)
+ return;
+ d->velocityDev = realDev;
+ emit velocityDeviationChanged();
+}
+
+/*!
+ \qmlproperty ParticleMotion Particles::motion
+ This property sets the type of motion to apply to the particles.
+
+ When a particle is created it will have an initial direction and velocity.
+ The motion of the particle during its lifeSpan is then influenced by the
+ motion property.
+
+ Default motion is ParticleMotionLinear.
+*/
+
+/*!
+ \property QDeclarativeParticles::motion
+ \brief sets the type of motion to apply to the particles.
+
+ When a particle is created it will have an initial direction and velocity.
+ The motion of the particle during its lifeSpan is then influenced by the
+ motion property.
+
+ Default motion is QDeclarativeParticleMotionLinear.
+*/
+QDeclarativeParticleMotion *QDeclarativeParticles::motion() const
+{
+ Q_D(const QDeclarativeParticles);
+ return d->motion;
+}
+
+void QDeclarativeParticles::setMotion(QDeclarativeParticleMotion *motion)
+{
+ Q_D(QDeclarativeParticles);
+ if (motion == d->motion)
+ return;
+ d->motion = motion;
+ emit motionChanged();
+}
+
+/*!
+ \qmlmethod Particles::burst(int count, int emissionRate)
+
+ Initiates a burst of particles.
+
+ This method takes two arguments. The first argument is the number
+ of particles to emit and the second argument is the emissionRate for the
+ burst. If the second argument is omitted, it is treated as -1. The burst
+ of particles has a separate emissionRate and count to the normal emission of
+ particles. The burst uses the same values as normal emission for all other
+ properties, including emissionVariance.
+
+ The normal emission of particles will continue during the burst, however
+ the particles created by the burst count towards the maximum number used by
+ normal emission. To avoid this behavior, use two Particles elements.
+
+*/
+void QDeclarativeParticles::burst(int count, int emissionRate)
+{
+ Q_D(QDeclarativeParticles);
+ d->bursts << qMakePair(count, emissionRate);
+ if (d->clock.state() != QAbstractAnimation::Running)
+ d->clock.start();
+}
+
+void QDeclarativeParticlesPainter::updateSize()
+{
+ if (!d->_componentComplete)
+ return;
+
+ const int parentX = parentItem()->x();
+ const int parentY = parentItem()->y();
+ for (int i = 0; i < d->particles.count(); ++i) {
+ const QDeclarativeParticle &particle = d->particles.at(i);
+ if(particle.x > maxX)
+ maxX = particle.x;
+ if(particle.x < minX)
+ minX = particle.x;
+ if(particle.y > maxY)
+ maxY = particle.y;
+ if(particle.y < minY)
+ minY = particle.y;
+ }
+
+ int myWidth = (int)(maxX-minX+0.5)+d->image.width();
+ int myX = (int)(minX - parentX);
+ int myHeight = (int)(maxY-minY+0.5)+d->image.height();
+ int myY = (int)(minY - parentY);
+ setWidth(myWidth);
+ setHeight(myHeight);
+ setX(myX);
+ setY(myY);
+}
+
+void QDeclarativeParticles::paint(QPainter *p, const QStyleOptionGraphicsItem *, QWidget *)
+{
+ Q_UNUSED(p);
+ //painting is done by the ParticlesPainter, so it can have the right size
+}
+
+void QDeclarativeParticlesPainter::paint(QPainter *p, const QStyleOptionGraphicsItem *, QWidget *)
+{
+ if (d->image.isNull() || d->particles.isEmpty())
+ return;
+
+ const int myX = x() + parentItem()->x();
+ const int myY = y() + parentItem()->y();
+
+#if (QT_VERSION >= QT_VERSION_CHECK(4,7,0))
+ QVarLengthArray<QPainter::PixmapFragment, 256> pixmapData;
+#else
+ QVarLengthArray<QDrawPixmaps::Data, 256> pixmapData;
+#endif
+ pixmapData.resize(d->particles.count());
+
+ const QRectF sourceRect = d->image.rect();
+ qreal halfPWidth = sourceRect.width()/2.;
+ qreal halfPHeight = sourceRect.height()/2.;
+ for (int i = 0; i < d->particles.count(); ++i) {
+ const QDeclarativeParticle &particle = d->particles.at(i);
+#if (QT_VERSION >= QT_VERSION_CHECK(4,7,0))
+ pixmapData[i].x = particle.x - myX + halfPWidth;
+ pixmapData[i].y = particle.y - myY + halfPHeight;
+#else
+ pixmapData[i].point = QPointF(particle.x - myX + halfPWidth, particle.y - myY + halfPHeight);
+#endif
+ pixmapData[i].opacity = particle.opacity;
+
+ //these never change
+ pixmapData[i].rotation = 0;
+ pixmapData[i].scaleX = 1;
+ pixmapData[i].scaleY = 1;
+#if (QT_VERSION >= QT_VERSION_CHECK(4,7,0))
+ pixmapData[i].sourceLeft = sourceRect.left();
+ pixmapData[i].sourceTop = sourceRect.top();
+ pixmapData[i].width = sourceRect.width();
+ pixmapData[i].height = sourceRect.height();
+#else
+ pixmapData[i].source = sourceRect;
+#endif
+ }
+#if (QT_VERSION >= QT_VERSION_CHECK(4,7,0))
+ p->drawPixmapFragments(pixmapData.data(), d->particles.count(), d->image);
+#else
+ qDrawPixmaps(p, pixmapData.data(), d->particles.count(), d->image);
+#endif
+}
+
+void QDeclarativeParticles::componentComplete()
+{
+ Q_D(QDeclarativeParticles);
+ QDeclarativeItem::componentComplete();
+ if (d->count && d->emissionRate) {
+ d->paintItem->updateSize();
+ d->clock.start();
+ }
+ if (d->lifeSpanDev > d->lifeSpan)
+ d->lifeSpanDev = d->lifeSpan;
+}
+
+QT_END_NAMESPACE
diff --git a/src/imports/particles/qdeclarativeparticles_p.h b/src/imports/particles/qdeclarativeparticles_p.h
new file mode 100644
index 0000000..993796d
--- /dev/null
+++ b/src/imports/particles/qdeclarativeparticles_p.h
@@ -0,0 +1,258 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtDeclarative module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QDECLARATIVEPARTICLES_H
+#define QDECLARATIVEPARTICLES_H
+
+#include <QtDeclarative/qdeclarativeitem.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Declarative)
+
+class QDeclarativeParticle;
+class QDeclarativeParticles;
+class QDeclarativeParticleMotion : public QObject
+{
+ Q_OBJECT
+public:
+ QDeclarativeParticleMotion(QObject *parent=0);
+
+ virtual void advance(QDeclarativeParticle &, int interval);
+ virtual void created(QDeclarativeParticle &);
+ virtual void destroy(QDeclarativeParticle &);
+};
+
+class QDeclarativeParticleMotionLinear : public QDeclarativeParticleMotion
+{
+ Q_OBJECT
+public:
+ QDeclarativeParticleMotionLinear(QObject *parent=0)
+ : QDeclarativeParticleMotion(parent) {}
+
+ virtual void advance(QDeclarativeParticle &, int interval);
+};
+
+class QDeclarativeParticleMotionGravity : public QDeclarativeParticleMotion
+{
+ Q_OBJECT
+
+ Q_PROPERTY(qreal xattractor READ xAttractor WRITE setXAttractor NOTIFY xattractorChanged)
+ Q_PROPERTY(qreal yattractor READ yAttractor WRITE setYAttractor NOTIFY yattractorChanged)
+ Q_PROPERTY(qreal acceleration READ acceleration WRITE setAcceleration NOTIFY accelerationChanged)
+public:
+ QDeclarativeParticleMotionGravity(QObject *parent=0)
+ : QDeclarativeParticleMotion(parent), _xAttr(0.0), _yAttr(0.0), _accel(0.00005) {}
+
+ qreal xAttractor() const { return _xAttr; }
+ void setXAttractor(qreal x);
+
+ qreal yAttractor() const { return _yAttr; }
+ void setYAttractor(qreal y);
+
+ qreal acceleration() const { return _accel * 1000000; }
+ void setAcceleration(qreal accel);
+
+ virtual void advance(QDeclarativeParticle &, int interval);
+
+Q_SIGNALS:
+ void xattractorChanged();
+ void yattractorChanged();
+ void accelerationChanged();
+
+private:
+ qreal _xAttr;
+ qreal _yAttr;
+ qreal _accel;
+};
+
+class QDeclarativeParticleMotionWander : public QDeclarativeParticleMotion
+{
+ Q_OBJECT
+public:
+ QDeclarativeParticleMotionWander()
+ : QDeclarativeParticleMotion(), particles(0), _xvariance(0), _yvariance(0) {}
+
+ virtual void advance(QDeclarativeParticle &, int interval);
+ virtual void created(QDeclarativeParticle &);
+ virtual void destroy(QDeclarativeParticle &);
+
+ struct Data {
+ qreal x_targetV;
+ qreal y_targetV;
+ qreal x_peak;
+ qreal y_peak;
+ qreal x_var;
+ qreal y_var;
+ };
+
+ Q_PROPERTY(qreal xvariance READ xVariance WRITE setXVariance NOTIFY xvarianceChanged)
+ qreal xVariance() const { return _xvariance * 1000.0; }
+ void setXVariance(qreal var);
+
+ Q_PROPERTY(qreal yvariance READ yVariance WRITE setYVariance NOTIFY yvarianceChanged)
+ qreal yVariance() const { return _yvariance * 1000.0; }
+ void setYVariance(qreal var);
+
+ Q_PROPERTY(qreal pace READ pace WRITE setPace NOTIFY paceChanged)
+ qreal pace() const { return _pace * 1000.0; }
+ void setPace(qreal pace);
+
+Q_SIGNALS:
+ void xvarianceChanged();
+ void yvarianceChanged();
+ void paceChanged();
+
+private:
+ QDeclarativeParticles *particles;
+ qreal _xvariance;
+ qreal _yvariance;
+ qreal _pace;
+};
+
+class QDeclarativeParticlesPrivate;
+class QDeclarativeParticles : public QDeclarativeItem
+{
+ Q_OBJECT
+
+ Q_PROPERTY(QUrl source READ source WRITE setSource NOTIFY sourceChanged)
+ Q_PROPERTY(int count READ count WRITE setCount NOTIFY countChanged)
+ Q_PROPERTY(int emissionRate READ emissionRate WRITE setEmissionRate NOTIFY emissionRateChanged)
+ Q_PROPERTY(qreal emissionVariance READ emissionVariance WRITE setEmissionVariance NOTIFY emissionVarianceChanged)
+ Q_PROPERTY(int lifeSpan READ lifeSpan WRITE setLifeSpan NOTIFY lifeSpanChanged)
+ Q_PROPERTY(int lifeSpanDeviation READ lifeSpanDeviation WRITE setLifeSpanDeviation NOTIFY lifeSpanDeviationChanged)
+ Q_PROPERTY(int fadeInDuration READ fadeInDuration WRITE setFadeInDuration NOTIFY fadeInDurationChanged)
+ Q_PROPERTY(int fadeOutDuration READ fadeOutDuration WRITE setFadeOutDuration NOTIFY fadeOutDurationChanged)
+ Q_PROPERTY(qreal angle READ angle WRITE setAngle NOTIFY angleChanged)
+ Q_PROPERTY(qreal angleDeviation READ angleDeviation WRITE setAngleDeviation NOTIFY angleDeviationChanged)
+ Q_PROPERTY(qreal velocity READ velocity WRITE setVelocity NOTIFY velocityChanged)
+ Q_PROPERTY(qreal velocityDeviation READ velocityDeviation WRITE setVelocityDeviation NOTIFY velocityDeviationChanged)
+ Q_PROPERTY(QDeclarativeParticleMotion *motion READ motion WRITE setMotion NOTIFY motionChanged)
+ Q_CLASSINFO("DefaultProperty", "motion")
+
+public:
+ QDeclarativeParticles(QDeclarativeItem *parent=0);
+ ~QDeclarativeParticles();
+
+ QUrl source() const;
+ void setSource(const QUrl &);
+
+ int count() const;
+ void setCount(int cnt);
+
+ int emissionRate() const;
+ void setEmissionRate(int);
+
+ qreal emissionVariance() const;
+ void setEmissionVariance(qreal);
+
+ int lifeSpan() const;
+ void setLifeSpan(int);
+
+ int lifeSpanDeviation() const;
+ void setLifeSpanDeviation(int);
+
+ int fadeInDuration() const;
+ void setFadeInDuration(int);
+
+ int fadeOutDuration() const;
+ void setFadeOutDuration(int);
+
+ qreal angle() const;
+ void setAngle(qreal);
+
+ qreal angleDeviation() const;
+ void setAngleDeviation(qreal);
+
+ qreal velocity() const;
+ void setVelocity(qreal);
+
+ qreal velocityDeviation() const;
+ void setVelocityDeviation(qreal);
+
+ QDeclarativeParticleMotion *motion() const;
+ void setMotion(QDeclarativeParticleMotion *);
+
+ void paint(QPainter *, const QStyleOptionGraphicsItem *, QWidget *);
+
+public Q_SLOTS:
+ void burst(int count, int emissionRate=-1);
+
+protected:
+ virtual void componentComplete();
+
+Q_SIGNALS:
+ void sourceChanged();
+ void countChanged();
+ void emissionRateChanged();
+ void emissionVarianceChanged();
+ void lifeSpanChanged();
+ void lifeSpanDeviationChanged();
+ void fadeInDurationChanged();
+ void fadeOutDurationChanged();
+ void angleChanged();
+ void angleDeviationChanged();
+ void velocityChanged();
+ void velocityDeviationChanged();
+ void emittingChanged();
+ void motionChanged();
+
+private Q_SLOTS:
+ void imageLoaded();
+
+private:
+ Q_DISABLE_COPY(QDeclarativeParticles)
+ Q_DECLARE_PRIVATE_D(QGraphicsItem::d_ptr.data(), QDeclarativeParticles)
+};
+
+QT_END_NAMESPACE
+
+QML_DECLARE_TYPE(QDeclarativeParticleMotion)
+QML_DECLARE_TYPE(QDeclarativeParticleMotionLinear)
+QML_DECLARE_TYPE(QDeclarativeParticleMotionGravity)
+QML_DECLARE_TYPE(QDeclarativeParticleMotionWander)
+QML_DECLARE_TYPE(QDeclarativeParticles)
+
+QT_END_HEADER
+
+#endif
diff --git a/src/imports/particles/qmldir b/src/imports/particles/qmldir
new file mode 100644
index 0000000..15456bb
--- /dev/null
+++ b/src/imports/particles/qmldir
@@ -0,0 +1 @@
+plugin particles
--
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